diff --git a/tools/migratedb/migratedb.py b/tools/migratedb/migratedb.py
index 44f0943..d88c716 100644
--- a/tools/migratedb/migratedb.py
+++ b/tools/migratedb/migratedb.py
@@ -18,6 +18,11 @@ context = {
     'channel': 0,
     'dbname_prefix': ''
 }
+EXCLUDE_KEYS = {
+    'game2004api:kill_rank_6006': 1,
+    'game2004api:win_rank_6006': 1,
+    'game2004api:integral_rank_6006': 1
+}
 
 def scanKeys(r, key_prefix, matched_keys):
     scan_key = key_prefix + '*'
@@ -36,8 +41,15 @@ def scanKeys(r, key_prefix, matched_keys):
             break
     #end while cursor
 
+def excludeKey(key):
+    global EXCLUDE_KEYS
+    return key in EXCLUDE_KEYS
+
 def saveKeys(r, keys, curr_file):
     for key in keys:
+        if excludeKey(key):
+            print('[WARNING]exclude key ' + key)
+            continue
         data = r.get(key)
         expire = r.ttl(key)
         curr_file.write(json.dumps(