diff --git a/test/test_difflib.py b/test/test_difflib.py
new file mode 100644
index 0000000..95a862a
--- /dev/null
+++ b/test/test_difflib.py
@@ -0,0 +1,33 @@
+import difflib
+
+from xiaomusic.utils import (
+    keyword_detection,
+    find_best_match,
+)
+
+if __name__ == "__main__":
+    user_input = "八年的爱"
+    s1 = "冰冰超人 - 八年的爱新版"
+    s2 = "冰冰超人 - 八年的爱"
+    r1 = difflib.SequenceMatcher(None, s1, user_input).ratio()
+    r2 = difflib.SequenceMatcher(None, s2, user_input).ratio()
+    print(s1, r1)
+    print(s2, r2)
+
+    s3 = "其他"
+    str_list = [s2, s1, s3]
+    matches, remains = keyword_detection(user_input, str_list, n=10)
+    print(matches, remains)
+
+    extra_search_index = {}
+    extra_search_index["1"] = s1
+    extra_search_index["2"] = s2
+    extra_search_index["3"] = s3
+    real_names = find_best_match(
+            user_input,
+            str_list,
+            cutoff=0.4,
+            n=100,
+            extra_search_index=extra_search_index,
+        )
+    print(real_names)