diff --git a/age_calc.py b/age_calc.py
index e12191d..d15482f 100644
--- a/age_calc.py
+++ b/age_calc.py
@@ -1,14 +1,14 @@
 import time
 
-def calc(brith, life_expectancy):
+def calc(birth, life_expectancy):
     # Year Month Day, Hour Minute Second
-    ts_brith = time.mktime(time.strptime("{}-{}-{} {}:{}:{}".format(*brith), "%Y-%m-%d %H:%M:%S"))
+    ts_birth = time.mktime(time.strptime("{}-{}-{} {}:{}:{}".format(*birth), "%Y-%m-%d %H:%M:%S"))
     # MilliSecond
-    ts_brith += brith[-1] / 1000
+    ts_birth += birth[-1] / 1000
     # Distance
-    ts_dis = time.time() - ts_brith
+    ts_dis = time.time() - ts_birth
     # Leap Year Cut Down
-    for i in range(brith[0], int(time.strftime("%Y", time.localtime()))):
+    for i in range(birth[0], int(time.strftime("%Y", time.localtime()))):
         if not i % 4:
             ts_dis -= 24 * 60 * 60
     age = ts_dis / (365 * 24 * 60 * 60)
@@ -16,7 +16,7 @@ def calc(brith, life_expectancy):
     # Remaining Calc
     time_remaining = (life_expectancy - age) * 60 * 60 * 24 * 365
     # Leap Year Cut Down
-    for i in range(BRITH[0] + int(age), BRITH[0] + int(life_expectancy)):
+    for i in range(BIRTH[0] + int(age), BIRTH[0] + int(life_expectancy)):
         if not i % 4:
             time_remaining += 60 * 60 * 24
     # More Remaining Calc
@@ -28,11 +28,11 @@ def calc(brith, life_expectancy):
 
 if __name__ == "__main__":
     
-    BRITH = (2005, 3, 16, 9, 0, 0, 0) # 生日，年 月 日 时 分 秒 毫秒
+    BIRTH = (2005, 3, 16, 9, 0, 0, 0) # 生日，年 月 日 时 分 秒 毫秒
     LIFE_EXPECTANCY = 24 # 预期寿命，岁
 
     while True:
-        data = calc(BRITH, LIFE_EXPECTANCY)
+        data = calc(BIRTH, LIFE_EXPECTANCY)
         print("您已：{}岁                                    \r".format(data[0]), end="")
         time.sleep(1)
         print("生命剩下 {}月/{}周/{}日                        \r".format(data[-1], data[-2], data[-3]), end="")