diff --git a/findDup.py b/findDup.py
new file mode 100644
index 0000000..b9dadab
--- /dev/null
+++ b/findDup.py
@@ -0,0 +1,42 @@
+import hashlib
+import os
+import sys
+
+
+def getmd5(filename):
+    file_txt = open(filename, 'rb').read()
+    return hashlib.md5(file_txt).hexdigest()
+
+
+def main():
+    allfiles = sys.argv[1] 
+    print("input file:%s"%allfiles)
+    # all_md5 = []
+    # total_file = 0
+    # total_delete = 0
+    all_md5 = {}
+    for dir in os.listdir(allfiles):
+        path = os.path.join(allfiles,dir)
+        filemd5 = getmd5(path)
+        if filemd5 in all_md5:
+            print("dup file:%s\n"%dir)
+            print("origin pic:%s\n"%all_md5[filemd5])
+            os.remove("%s/%s"%(allfiles, dir))
+        else:
+            all_md5[filemd5] = dir
+        if filemd5 not in dir:
+            if ".png" in dir:
+                filemd5 = filemd5 + ".png"
+            if ".jpg" in dir:
+                filemd5 = filemd5 + ".png"
+            if ".webp" in dir:
+                filemd5 = filemd5 + ".webp"
+            if ".gif" in dir:
+                filemd5 = filemd5 + ".gif"
+            if ".jpeg" in dir:
+                filemd5 = filemd5 + ".jpeg"
+            os.rename(path, os.path.join(allfiles, filemd5))
+
+if __name__ == '__main__':
+    main()
+