diff --git a/pve_server/run_dmc.py b/pve_server/run_dmc.py
index 957f27c..2f73727 100644
--- a/pve_server/run_dmc.py
+++ b/pve_server/run_dmc.py
@@ -1,4 +1,6 @@
 import os
+import itertools
+
 import torch
 import numpy as np
 from heapq import nlargest
@@ -323,6 +325,9 @@ def _get_legal_card_play_actions(player_hand_cards, rival_move):
     for m in moves:
         m.sort()
 
+    moves.sort()
+    moves = list(move for move,_ in itertools.groupby(moves))
+
     return moves
 
 Card2Column = {'3': 0, '4': 1, '5': 2, '6': 3, '7': 4, '8': 5, '9': 6, 'T': 7,
diff --git a/pve_server/run_douzero.py b/pve_server/run_douzero.py
index b4bd9a6..e8e1869 100644
--- a/pve_server/run_douzero.py
+++ b/pve_server/run_douzero.py
@@ -1,3 +1,5 @@
+import itertools
+
 from flask import Flask, jsonify, request
 from flask_cors import CORS
 
@@ -237,6 +239,9 @@ def _get_legal_card_play_actions(player_hand_cards, rival_move):
     for m in moves:
         m.sort()
 
+    moves.sort()
+    moves = list(move for move,_ in itertools.groupby(moves))
+
     return moves
 
 if __name__ == '__main__':