diff --git a/dsRag/Start.py b/dsRag/Start.py
index 37557279..f61e17d5 100644
--- a/dsRag/Start.py
+++ b/dsRag/Start.py
@@ -187,8 +187,8 @@ async def get_tree_data():
                 "title": row[1],
                 "parent_id": row[2] if row[2] is not None else 0,
                 "isParent": not row[3],
-                "prerequisite": row[4],
-                "related": row[5],
+                "prerequisite": json.loads(row[4]) if row[4] and len(json.loads(row[4])) > 0 else None,
+                "related": json.loads(row[5]) if row[5] and len(json.loads(row[5])) > 0 else None,
                 "open": True
             }
         
diff --git a/dsRag/static/tree.html b/dsRag/static/tree.html
index 06d523c6..320a2e54 100644
--- a/dsRag/static/tree.html
+++ b/dsRag/static/tree.html
@@ -101,8 +101,8 @@
                     html += '<span style="display:inline-block; width:16px;"></span>';
                 }
                 html += node.title + '</td>';
-                html += '<td>' + (node.prerequisite || '无') + '</td>';
-                html += '<td>' + (node.related || '无') + '</td>';
+                html += '<td>' + (node.prerequisite || '') + '</td>';
+                html += '<td>' + (node.related || '') + '</td>';
                 html += '</tr>';
 
                 if (node.open && node.children && node.children.length > 0) {