diff --git a/src/main/java/com/nlf/calendar/Fu.java b/src/main/java/com/nlf/calendar/Fu.java
new file mode 100644
index 0000000..e925f82
--- /dev/null
+++ b/src/main/java/com/nlf/calendar/Fu.java
@@ -0,0 +1,53 @@
+package com.nlf.calendar;
+
+/**
+ * 三伏
+ * <p>从夏至后第3个庚日算起，初伏为10天，中伏为10天或20天，末伏为10天。当夏至与立秋之间出现4个庚日时中伏为10天，出现5个庚日则为20天。</p>
+ *
+ * @author 6tail
+ */
+public class Fu {
+  /**
+   * 名称：初伏、中伏、末伏
+   */
+  private String name;
+
+  /**
+   * 当前入伏第几天，1-20
+   */
+  private int index;
+
+
+  public Fu() {
+  }
+
+  public Fu(String name, int index) {
+    this.name = name;
+    this.index = index;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public int getIndex() {
+    return index;
+  }
+
+  public void setIndex(int index) {
+    this.index = index;
+  }
+
+  @Override
+  public String toString() {
+    return name;
+  }
+
+  public String toFullString() {
+    return name + "第" + index + "天";
+  }
+}
diff --git a/src/main/java/com/nlf/calendar/Lunar.java b/src/main/java/com/nlf/calendar/Lunar.java
index 9a4cc86..5101857 100644
--- a/src/main/java/com/nlf/calendar/Lunar.java
+++ b/src/main/java/com/nlf/calendar/Lunar.java
@@ -2339,6 +2339,38 @@ public class Lunar{
     return timeZhiIndex;
   }
 
+  public int getDayGanIndex() {
+    return dayGanIndex;
+  }
+
+  public int getDayZhiIndex() {
+    return dayZhiIndex;
+  }
+
+  public int getMonthGanIndex() {
+    return monthGanIndex;
+  }
+
+  public int getMonthZhiIndex() {
+    return monthZhiIndex;
+  }
+
+  public int getYearGanIndex() {
+    return yearGanIndex;
+  }
+
+  public int getYearZhiIndex() {
+    return yearZhiIndex;
+  }
+
+  public int getYearGanIndexByLiChun() {
+    return yearGanIndexByLiChun;
+  }
+
+  public int getYearZhiIndexByLiChun() {
+    return yearZhiIndexByLiChun;
+  }
+
   public int getDayGanIndexExact() {
     return dayGanIndexExact;
   }
@@ -2576,4 +2608,104 @@ public class Lunar{
   public String getTimeXunKong(){
     return LunarUtil.getXunKong(getTimeInGanZhi());
   }
+
+  /**
+   * 获取数九
+   * @return 数九，如果不是数九天，返回null
+   */
+  public ShuJiu getShuJiu(){
+    Calendar currentCalendar = Calendar.getInstance();
+    currentCalendar.set(solar.getYear(),solar.getMonth()-1,solar.getDay(),0,0,0);
+    currentCalendar.set(Calendar.MILLISECOND,0);
+    Solar start = jieQi.get(JIE_QI_APPEND);
+    Calendar startCalendar = Calendar.getInstance();
+    startCalendar.set(start.getYear(),start.getMonth()-1,start.getDay(),0,0,0);
+    startCalendar.set(Calendar.MILLISECOND,0);
+
+    if(currentCalendar.compareTo(startCalendar)<0){
+      start = jieQi.get(JIE_QI_FIRST);
+      startCalendar.set(start.getYear(),start.getMonth()-1,start.getDay(),0,0,0);
+    }
+
+    Calendar endCalendar = Calendar.getInstance();
+    endCalendar.set(start.getYear(),start.getMonth()-1,start.getDay(),0,0,0);
+    endCalendar.add(Calendar.DATE,81);
+    endCalendar.set(Calendar.MILLISECOND,0);
+
+    if(currentCalendar.compareTo(startCalendar)<0||currentCalendar.compareTo(endCalendar)>=0){
+      return null;
+    }
+
+    int days = (int)((currentCalendar.getTimeInMillis()-startCalendar.getTimeInMillis())/(1000*60*60*24));
+    return new ShuJiu(LunarUtil.NUMBER[days/9+1]+"九",days%9+1);
+  }
+
+  /**
+   * 获取三伏
+   * @return 三伏，如果不是伏天，返回null
+   */
+  public Fu getFu(){
+    Calendar currentCalendar = Calendar.getInstance();
+    currentCalendar.set(solar.getYear(),solar.getMonth()-1,solar.getDay(),0,0,0);
+    currentCalendar.set(Calendar.MILLISECOND,0);
+    Solar xiaZhi = jieQi.get("夏至");
+    Solar liQiu = jieQi.get("立秋");
+    Calendar startCalendar = Calendar.getInstance();
+    startCalendar.set(xiaZhi.getYear(),xiaZhi.getMonth()-1,xiaZhi.getDay(),0,0,0);
+    startCalendar.set(Calendar.MILLISECOND,0);
+
+    // 第1个庚日
+    int add = 6-xiaZhi.getLunar().getDayGanIndex();
+    if(add<0){
+      add += 10;
+    }
+    // 第3个庚日，即初伏第1天
+    add += 20;
+    startCalendar.add(Calendar.DATE,add);
+
+    // 初伏以前
+    if(currentCalendar.compareTo(startCalendar)<0){
+      return null;
+    }
+
+    int days = (int)((currentCalendar.getTimeInMillis()-startCalendar.getTimeInMillis())/(1000*60*60*24));
+    if(days<10){
+      return new Fu("初伏",days+1);
+    }
+
+    // 第4个庚日，中伏第1天
+    startCalendar.add(Calendar.DATE,10);
+
+    days = (int)((currentCalendar.getTimeInMillis()-startCalendar.getTimeInMillis())/(1000*60*60*24));
+    if(days<10){
+      return new Fu("中伏",days+1);
+    }
+
+    // 第5个庚日，中伏第11天或末伏第1天
+    startCalendar.add(Calendar.DATE,10);
+
+    Calendar liQiuCalendar = Calendar.getInstance();
+    liQiuCalendar.set(liQiu.getYear(),liQiu.getMonth()-1,liQiu.getDay(),0,0,0);
+    liQiuCalendar.set(Calendar.MILLISECOND,0);
+
+    days = (int)((currentCalendar.getTimeInMillis()-startCalendar.getTimeInMillis())/(1000*60*60*24));
+    // 末伏
+    if(liQiuCalendar.compareTo(startCalendar)<=0){
+      if(days<10){
+        return new Fu("末伏",days+1);
+      }
+    }else{
+      // 中伏
+      if(days<10){
+        return new Fu("中伏",days+11);
+      }
+      // 末伏第1天
+      startCalendar.add(Calendar.DATE,10);
+      days = (int)((currentCalendar.getTimeInMillis()-startCalendar.getTimeInMillis())/(1000*60*60*24));
+      if(days<10){
+        return new Fu("末伏",days+1);
+      }
+    }
+    return null;
+  }
 }
diff --git a/src/main/java/com/nlf/calendar/ShuJiu.java b/src/main/java/com/nlf/calendar/ShuJiu.java
new file mode 100644
index 0000000..0196692
--- /dev/null
+++ b/src/main/java/com/nlf/calendar/ShuJiu.java
@@ -0,0 +1,51 @@
+package com.nlf.calendar;
+
+/**
+ * 数九
+ * @author 6tail
+ */
+public class ShuJiu {
+
+  /**
+   * 名称，如一九、二九
+   */
+  private String name;
+
+  /**
+   * 当前数九第几天，1-9
+   */
+  private int index;
+
+  public ShuJiu() {
+  }
+
+  public ShuJiu(String name, int index) {
+    this.name = name;
+    this.index = index;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public int getIndex() {
+    return index;
+  }
+
+  public void setIndex(int index) {
+    this.index = index;
+  }
+
+  @Override
+  public String toString() {
+    return name;
+  }
+
+  public String toFullString() {
+    return name + "第" + index + "天";
+  }
+}
diff --git a/src/main/java/com/nlf/calendar/Solar.java b/src/main/java/com/nlf/calendar/Solar.java
index 9af2161..68405c6 100644
--- a/src/main/java/com/nlf/calendar/Solar.java
+++ b/src/main/java/com/nlf/calendar/Solar.java
@@ -379,25 +379,25 @@ public class Solar{
    * @return 星座
    */
   public String getXingZuo(){
-    int index = 11,m = month,d = day;
-    int y = m*100+d;
+    int index = 11;
+    int y = month*100+day;
     if(y>=321&&y<=419){
       index = 0;
     }else if(y>=420&&y<=520){
       index = 1;
-    }else if(y>=521&&y<=620){
+    }else if(y>=521&&y<=621){
       index = 2;
-    }else if(y>=621&&y<=722){
+    }else if(y>=622&&y<=722){
       index = 3;
     }else if(y>=723&&y<=822){
       index = 4;
     }else if(y>=823&&y<=922){
       index = 5;
-    }else if(y>=923&&y<=1022){
+    }else if(y>=923&&y<=1023){
       index = 6;
-    }else if(y>=1023&&y<=1121){
+    }else if(y>=1024&&y<=1122){
       index = 7;
-    }else if(y>=1122&&y<=1221){
+    }else if(y>=1123&&y<=1221){
       index = 8;
     }else if(y>=1222||y<=119){
       index = 9;
diff --git a/src/test/java/test/FuTest.java b/src/test/java/test/FuTest.java
new file mode 100644
index 0000000..f6ac9bf
--- /dev/null
+++ b/src/test/java/test/FuTest.java
@@ -0,0 +1,140 @@
+package test;
+
+import com.nlf.calendar.Fu;
+import com.nlf.calendar.Lunar;
+import com.nlf.calendar.Solar;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 三伏测试
+ *
+ * @author 6tail
+ */
+public class FuTest {
+
+  @Test
+  public void test1(){
+    Solar solar = new Solar(2011,7,14);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"初伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"初伏第1天",fu.toFullString());
+  }
+
+  @Test
+  public void test2(){
+    Solar solar = new Solar(2011,7,23);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"初伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"初伏第10天",fu.toFullString());
+  }
+
+  @Test
+  public void test3(){
+    Solar solar = new Solar(2011,7,24);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"中伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"中伏第1天",fu.toFullString());
+  }
+
+  @Test
+  public void test4(){
+    Solar solar = new Solar(2011,8,12);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"中伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"中伏第20天",fu.toFullString());
+  }
+
+  @Test
+  public void test5(){
+    Solar solar = new Solar(2011,8,13);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"末伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"末伏第1天",fu.toFullString());
+  }
+
+  @Test
+  public void test6(){
+    Solar solar = new Solar(2011,8,22);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"末伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"末伏第10天",fu.toFullString());
+  }
+
+  @Test
+  public void test7(){
+    Solar solar = new Solar(2011,7,13);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertNull(solar.toYmd(),fu);
+  }
+
+  @Test
+  public void test8(){
+    Solar solar = new Solar(2011,8,23);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertNull(solar.toYmd(),fu);
+  }
+
+  @Test
+  public void test9(){
+    Solar solar = new Solar(2012,7,18);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"初伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"初伏第1天",fu.toFullString());
+  }
+
+  @Test
+  public void test10(){
+    Solar solar = new Solar(2012,8,5);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"中伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"中伏第9天",fu.toFullString());
+  }
+
+  @Test
+  public void test11(){
+    Solar solar = new Solar(2012,8,8);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"末伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"末伏第2天",fu.toFullString());
+  }
+
+  @Test
+  public void test12(){
+    Solar solar = new Solar(2020,7,17);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"初伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"初伏第2天",fu.toFullString());
+  }
+
+  @Test
+  public void test13(){
+    Solar solar = new Solar(2020,7,26);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"中伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"中伏第1天",fu.toFullString());
+  }
+
+  @Test
+  public void test14(){
+    Solar solar = new Solar(2020,8,24);
+    Lunar lunar = solar.getLunar();
+    Fu fu = lunar.getFu();
+    Assert.assertEquals(solar.toYmd(),"末伏",fu.toString());
+    Assert.assertEquals(solar.toYmd(),"末伏第10天",fu.toFullString());
+  }
+
+}
diff --git a/src/test/java/test/ShuJiuTest.java b/src/test/java/test/ShuJiuTest.java
new file mode 100644
index 0000000..69577cd
--- /dev/null
+++ b/src/test/java/test/ShuJiuTest.java
@@ -0,0 +1,78 @@
+package test;
+
+import com.nlf.calendar.Lunar;
+import com.nlf.calendar.ShuJiu;
+import com.nlf.calendar.Solar;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 数九测试
+ *
+ * @author 6tail
+ */
+public class ShuJiuTest {
+
+  @Test
+  public void test1(){
+    Solar solar = new Solar(2020,12,21);
+    Lunar lunar = solar.getLunar();
+    ShuJiu shuJiu = lunar.getShuJiu();
+    Assert.assertEquals(solar.toYmd(),"一九",shuJiu.toString());
+    Assert.assertEquals(solar.toYmd(),"一九第1天",shuJiu.toFullString());
+  }
+
+  @Test
+  public void test2(){
+    Solar solar = new Solar(2020,12,22);
+    Lunar lunar = solar.getLunar();
+    ShuJiu shuJiu = lunar.getShuJiu();
+    Assert.assertEquals(solar.toYmd(),"一九",shuJiu.toString());
+    Assert.assertEquals(solar.toYmd(),"一九第2天",shuJiu.toFullString());
+  }
+
+  @Test
+  public void test3(){
+    Solar solar = new Solar(2020,1,7);
+    Lunar lunar = solar.getLunar();
+    ShuJiu shuJiu = lunar.getShuJiu();
+    Assert.assertEquals(solar.toYmd(),"二九",shuJiu.toString());
+    Assert.assertEquals(solar.toYmd(),"二九第8天",shuJiu.toFullString());
+  }
+
+  @Test
+  public void test4(){
+    Solar solar = new Solar(2021,1,6);
+    Lunar lunar = solar.getLunar();
+    ShuJiu shuJiu = lunar.getShuJiu();
+    Assert.assertEquals(solar.toYmd(),"二九",shuJiu.toString());
+    Assert.assertEquals(solar.toYmd(),"二九第8天",shuJiu.toFullString());
+  }
+
+  @Test
+  public void test5(){
+    Solar solar = new Solar(2021,1,8);
+    Lunar lunar = solar.getLunar();
+    ShuJiu shuJiu = lunar.getShuJiu();
+    Assert.assertEquals(solar.toYmd(),"三九",shuJiu.toString());
+    Assert.assertEquals(solar.toYmd(),"三九第1天",shuJiu.toFullString());
+  }
+
+  @Test
+  public void test6(){
+    Solar solar = new Solar(2021,3,5);
+    Lunar lunar = solar.getLunar();
+    ShuJiu shuJiu = lunar.getShuJiu();
+    Assert.assertEquals(solar.toYmd(),"九九",shuJiu.toString());
+    Assert.assertEquals(solar.toYmd(),"九九第3天",shuJiu.toFullString());
+  }
+
+  @Test
+  public void test7(){
+    Solar solar = new Solar(2021,7,5);
+    Lunar lunar = solar.getLunar();
+    ShuJiu shuJiu = lunar.getShuJiu();
+    Assert.assertNull(solar.toYmd(),shuJiu);
+  }
+
+}
diff --git a/src/test/java/test/XingZuoTest.java b/src/test/java/test/XingZuoTest.java
new file mode 100644
index 0000000..9d616b8
--- /dev/null
+++ b/src/test/java/test/XingZuoTest.java
@@ -0,0 +1,110 @@
+package test;
+
+import com.nlf.calendar.Solar;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 阳历测试
+ *
+ * @author 6tail
+ */
+public class XingZuoTest {
+
+  @Test
+  public void test1(){
+    Solar solar = new Solar(2020,3,21);
+    Assert.assertEquals(solar.toYmd(),"白羊",solar.getXingZuo());
+    solar = new Solar(2020,4,19);
+    Assert.assertEquals(solar.toYmd(),"白羊",solar.getXingZuo());
+  }
+
+  @Test
+  public void test2(){
+    Solar solar = new Solar(2020,4,20);
+    Assert.assertEquals(solar.toYmd(),"金牛",solar.getXingZuo());
+    solar = new Solar(2020,5,20);
+    Assert.assertEquals(solar.toYmd(),"金牛",solar.getXingZuo());
+  }
+
+  @Test
+  public void test3(){
+    Solar solar = new Solar(2020,5,21);
+    Assert.assertEquals(solar.toYmd(),"双子",solar.getXingZuo());
+    solar = new Solar(2020,6,21);
+    Assert.assertEquals(solar.toYmd(),"双子",solar.getXingZuo());
+  }
+
+  @Test
+  public void test4(){
+    Solar solar = new Solar(2020,6,22);
+    Assert.assertEquals(solar.toYmd(),"巨蟹",solar.getXingZuo());
+    solar = new Solar(2020,7,22);
+    Assert.assertEquals(solar.toYmd(),"巨蟹",solar.getXingZuo());
+  }
+
+  @Test
+  public void test5(){
+    Solar solar = new Solar(2020,7,23);
+    Assert.assertEquals(solar.toYmd(),"狮子",solar.getXingZuo());
+    solar = new Solar(2020,8,22);
+    Assert.assertEquals(solar.toYmd(),"狮子",solar.getXingZuo());
+  }
+
+  @Test
+  public void test6(){
+    Solar solar = new Solar(2020,8,23);
+    Assert.assertEquals(solar.toYmd(),"处女",solar.getXingZuo());
+    solar = new Solar(2020,9,22);
+    Assert.assertEquals(solar.toYmd(),"处女",solar.getXingZuo());
+  }
+
+  @Test
+  public void test7(){
+    Solar solar = new Solar(2020,9,23);
+    Assert.assertEquals(solar.toYmd(),"天秤",solar.getXingZuo());
+    solar = new Solar(2020,10,23);
+    Assert.assertEquals(solar.toYmd(),"天秤",solar.getXingZuo());
+  }
+
+  @Test
+  public void test8(){
+    Solar solar = new Solar(2020,10,24);
+    Assert.assertEquals(solar.toYmd(),"天蝎",solar.getXingZuo());
+    solar = new Solar(2020,11,22);
+    Assert.assertEquals(solar.toYmd(),"天蝎",solar.getXingZuo());
+  }
+
+  @Test
+  public void test9(){
+    Solar solar = new Solar(2020,11,23);
+    Assert.assertEquals(solar.toYmd(),"射手",solar.getXingZuo());
+    solar = new Solar(2020,12,21);
+    Assert.assertEquals(solar.toYmd(),"射手",solar.getXingZuo());
+  }
+
+  @Test
+  public void test10(){
+    Solar solar = new Solar(2020,12,22);
+    Assert.assertEquals(solar.toYmd(),"摩羯",solar.getXingZuo());
+    solar = new Solar(2021,1,19);
+    Assert.assertEquals(solar.toYmd(),"摩羯",solar.getXingZuo());
+  }
+
+  @Test
+  public void test11(){
+    Solar solar = new Solar(2021,1,20);
+    Assert.assertEquals(solar.toYmd(),"水瓶",solar.getXingZuo());
+    solar = new Solar(2021,2,18);
+    Assert.assertEquals(solar.toYmd(),"水瓶",solar.getXingZuo());
+  }
+
+  @Test
+  public void test12(){
+    Solar solar = new Solar(2021,2,19);
+    Assert.assertEquals(solar.toYmd(),"双鱼",solar.getXingZuo());
+    solar = new Solar(2021,3,20);
+    Assert.assertEquals(solar.toYmd(),"双鱼",solar.getXingZuo());
+  }
+
+}