diff --git a/app.py b/app.py
index 062db06..cbaa57a 100644
--- a/app.py
+++ b/app.py
@@ -106,21 +106,35 @@ def extract_index_structure(es_client, index_name):
                         existing_fields[full_key] = "dict"
                         parse_document(value, full_key, existing_fields)
                     elif isinstance(value, list):
-                        if len(value) > 0 and isinstance(value[0], dict):
-                            existing_fields[full_key] = "list[dict]"
-                            parse_document(value[0], full_key, existing_fields)
-                        elif len(value) > 0:
-                            existing_fields[full_key] = f"list[{type(value[0]).__name__}]"
-                        else:
+                        # 遍历列表中的所有元素，确保全面检查类型
+                        list_types = set()
+                        for item in value:
+                            list_types.add(type(item).__name__)
+                            if isinstance(item, dict):
+                                parse_document(item, full_key, existing_fields)
+
+                        if len(list_types) == 0:
                             existing_fields[full_key] = "list[empty]"
+                        elif len(list_types) == 1:
+                            existing_fields[full_key] = f"list[{list_types.pop()}]"
+                        else:
+                            existing_fields[full_key] = "list[mixed]"
                     else:
                         existing_fields[full_key] = type(value).__name__
             elif isinstance(doc, list):
-                if len(doc) > 0:
-                    if isinstance(doc[0], dict):
-                        parse_document(doc[0], parent_key, existing_fields)
-                    else:
-                        existing_fields[f"{parent_key}[]"] = type(doc[0]).__name__
+                # 如果是根级别的列表，遍历元素并记录类型
+                list_types = set()
+                for item in doc:
+                    list_types.add(type(item).__name__)
+                    if isinstance(item, dict):
+                        parse_document(item, parent_key, existing_fields)
+
+                if len(list_types) == 0:
+                    existing_fields[parent_key] = "list[empty]"
+                elif len(list_types) == 1:
+                    existing_fields[parent_key] = f"list[{list_types.pop()}]"
+                else:
+                    existing_fields[parent_key] = "list[mixed]"
             else:
                 existing_fields[parent_key] = type(doc).__name__