diff --git a/webapp/controller/BlockChainController.class.php b/webapp/controller/BlockChainController.class.php
index 6d3ccb7b..2b94b5a8 100644
--- a/webapp/controller/BlockChainController.class.php
+++ b/webapp/controller/BlockChainController.class.php
@@ -103,7 +103,28 @@ class BlockChainController extends BaseAuthedController {
                 myself()->_rspErr(1, 'gun not found');
                 return;
             }
-
+            if ($gunDb['token_id']) {
+                myself()->_rspErr(1, 'already activated');
+                return;
+            }
+            $tokenId = $gunDb['active_token_id'];
+            if (!$tokenId) {
+                $tokenId = BuyRecord::genOrderId
+                         (
+                             2006,
+                             phpcommon\BC_FUNC_CREATION,
+                             myself()->_getNowTime(),
+                             myself()->_getOpenId()
+                         );
+                Gun::Update($gunDb['gun_uniid'],
+                             array(
+                                 'active_token_id' => $tokenId,
+                                 'active_count' => function () {
+                                     return 'active_count + 1';
+                                 }
+                             ));
+            }
+            $this->internalActivate721Nft($tokenId, Nft::GUN_TYPE, $gunDb['gun_uniid'], $gunDb['gun_id']);
         }
         break;
         default: