diff --git a/EdgeManager/EDataCapture/EDataCapture.php b/EdgeManager/EDataCapture/EDataCapture.php
index d6e311f..22248a3 100644
--- a/EdgeManager/EDataCapture/EDataCapture.php
+++ b/EdgeManager/EDataCapture/EDataCapture.php
@@ -60,7 +60,7 @@ class EDataCapture {
                 $this -> data[$row -> code][] = [
                     'value' => $row -> value,
                     'device_code' => $row -> device_code,
-                    'parent_code' => $row -> parent_code ?? NULL,
+                    'parent_device_code' => $row -> parent_device_code ?? NULL,
                     'batch' => $row -> batch ?? NULL
                 ];
             }
@@ -84,7 +84,7 @@ class EDataCapture {
                         $code,
                         $row['value'] === false ? 'f' : $row['value'],
                         $row['device_code'],
-                        $row['parent_code'] ?? NULL,
+                        $row['parent_device_code'] ?? NULL,
                         $row['batch'] ?? NULL
                     );
                 }
diff --git a/EdgeManager/EDataCapture/ENodeConfigure.php b/EdgeManager/EDataCapture/ENodeConfigure.php
index 5d56c38..3dac386 100644
--- a/EdgeManager/EDataCapture/ENodeConfigure.php
+++ b/EdgeManager/EDataCapture/ENodeConfigure.php
@@ -44,7 +44,7 @@ class ENodeConfigure {
                 v_float float8,
                 v_bool bool,
                 device_code text NOT NULL,
-                parent_code text,
+                parent_device_code text,
                 batch text,
                 capture_time timestamp NOT NULL DEFAULT NOW()
             )', $table_name
diff --git a/README.md b/README.md
index 5657ce6..edf437e 100644
--- a/README.md
+++ b/README.md
@@ -39,14 +39,14 @@
                 // value的类型需与type对应
                 "value": <string | int | float | bool>,
                 "device_code": [string],  // 必需字段
-                "parent_code": [string],  // 可选字段，对应MES中的code
+                "parent_device_code": [string],  // 可选字段，对应MES中的code
                 "batch": [string]  // 可选字段
             },
             {
                 "code": <string>,
                 "value": <string | int | float | bool>,
                 "device_code": [string],
-                "parent_code": [string],
+                "parent_device_code": [string],
                 "batch": [string]
             },
             ...