diff --git a/app.py b/app.py
index f0754c8..ee21705 100644
--- a/app.py
+++ b/app.py
@@ -2,11 +2,11 @@ from flask import Flask, render_template, request, redirect, url_for
 import uuid
 import logging
 import json
-from elasticsearch import Elasticsearch
+from elasticsearch import Elasticsearch, helpers
 from elasticsearch.exceptions import ApiError, TransportError
 from dataclasses import dataclass, asdict, field
 from typing import List, Dict, Any, Optional
-
+import json
 
 # 配置日志级别、格式和输出位置
 logging.basicConfig(
@@ -81,6 +81,62 @@ def load_indices_from_es(key: str, index: str, buf: Dict[str, Any]) -> Any:
         return None
     
 
+
+def extract_index_structure(es_client, index_name):
+    """
+    扫描 Elasticsearch 索引中的一个文档，提取字段结构（包括嵌套字段），生成包含所有字段的层级关系和类型信息。
+    
+    :param es_client: Elasticsearch 客户端实例
+    :param index_name: 要提取的索引名称
+    :return: 包含字段结构的字典
+    """
+    try:
+        # 获取索引中的一个文档
+        response = es_client.search(index=index_name, size=1)
+        field_structure = {}
+
+        # 递归解析字段结构
+        def parse_document(doc, parent_key="", existing_fields=None):
+            if existing_fields is None:
+                existing_fields = {}
+            
+            if isinstance(doc, dict):
+                for key, value in doc.items():
+                    full_key = f"{parent_key}.{key}" if parent_key else key
+                    if full_key not in existing_fields:
+                        existing_fields[full_key] = type(value).__name__
+                    if isinstance(value, dict):
+                        parse_document(value, full_key, existing_fields)
+                    elif isinstance(value, list) and len(value) > 0:
+                        if isinstance(value[0], dict):
+                            parse_document(value[0], full_key, existing_fields)
+                        else:
+                            existing_fields[full_key] = f"list[{type(value[0]).__name__}]"
+                    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[parent_key] = f"list[{type(doc[0]).__name__}]"
+            else:
+                existing_fields[parent_key] = type(doc).__name__
+            
+            return existing_fields
+
+        # 解析获取到的第一个文档的字段结构
+        if 'hits' in response and 'hits' in response['hits'] and len(response['hits']['hits']) > 0:
+            source = response['hits']['hits'][0].get('_source', {})
+            field_structure = parse_document(source)
+
+        return field_structure
+    except Exception as e:
+        print(f"Error extracting structure for index {index_name}: {e}")
+        return {}
+
+
+
 @app.route('/')
 def index():
     # 默认展示第一个客户
@@ -88,6 +144,9 @@ def index():
 
 
 
+
+
+
 def calculate_statistics():
     total_emails = 0
     cold_lead_count = 0
@@ -215,3 +274,11 @@ def search_by_email():
 
     # 如果没有找到匹配的邮件地址
     return "Email address not found.", 404
+
+
+
+# 提取字段结构
+field_structure = extract_index_structure(es, 'customer')
+
+# 打印字段结构
+print(json.dumps(field_structure, indent=2, ensure_ascii=False))
\ No newline at end of file
diff --git a/caller.py b/caller.py
index 3bca0b1..cc6f472 100644
--- a/caller.py
+++ b/caller.py
@@ -14,4 +14,6 @@ if not ret:
 
 customer_data=buf[key]['customer database']
 app.set_customer_data(customer_data)
+
+
 app.app.run(host="0.0.0.0", port=5001)