diff --git a/FizzBuzz.py b/FizzBuzz.py
new file mode 100644
index 0000000..afbf415
--- /dev/null
+++ b/FizzBuzz.py
@@ -0,0 +1,10 @@
+def transform(num):
+    ret = ''
+    if num % 3 == 0:
+        ret += 'Fizz'
+    if num % 5 == 0:
+        ret += 'Buzz'
+    if ret:
+        return ret
+    else:
+        return str(num)
diff --git a/Test_FizzBuzz.py b/Test_FizzBuzz.py
new file mode 100644
index 0000000..b6b5847
--- /dev/null
+++ b/Test_FizzBuzz.py
@@ -0,0 +1,20 @@
+from FizzBuzz import transform
+import unittest
+
+
+class TestFizzBuzz(unittest.TestCase):
+    def test_nomal(self):
+        self.assertEqual(transform(2), '2')
+
+    def test_times_3(self):
+        self.assertEqual(transform(3), 'Fizz')
+
+    def test_times_5(self):
+        self.assertEqual(transform(5), 'Buzz')
+
+    def test_times_3_5(self):
+        self.assertEqual(transform(15), 'FizzBuzz')
+
+
+if __name__ == '__main__':
+    unittest.main()