diff --git a/app/adminapi/logic/project/ProjectLogic.php b/app/adminapi/logic/project/ProjectLogic.php
index 189d3879c..d9514d6cb 100644
--- a/app/adminapi/logic/project/ProjectLogic.php
+++ b/app/adminapi/logic/project/ProjectLogic.php
@@ -74,7 +74,7 @@ class ProjectLogic extends BaseLogic
                 'strategic_significance' => $params['strategic_significance'] ?? 0,
                 'industry' => $params['industry'] ?? 0,
                 'unit_nature' => $params['unit_nature'] ?? 0,
-                'annex' => $params['annex'] ?? null,
+                'annex' => !empty($params['annex']) ? $params['annex'] : null,
                 'status' => 0,
 				'is_budget' => 0,
 	            'add_user' => $adminId
@@ -130,7 +130,7 @@ class ProjectLogic extends BaseLogic
 	            'strategic_significance' => $params['strategic_significance'] ?? 0,
 	            'industry' => $params['industry'] ?? 0,
 	            'unit_nature' => $params['unit_nature'] ?? 0,
-	            'annex' => $params['annex'] ?? null,
+	            'annex' => !empty($params['annex']) ? $params['annex'] : null,
 	            'update_time' => time(),
             ]);
             Db::commit();