diff --git a/src/document/openapi/cn/components_order.yml b/src/document/openapi/cn/components_order.yml
index 651cdd86c..a3caa0703 100644
--- a/src/document/openapi/cn/components_order.yml
+++ b/src/document/openapi/cn/components_order.yml
@@ -228,6 +228,11 @@ refundStatus:
       description: 币种
       example:
         AUD
+    settlement_date:
+      type: string
+      format: date
+      pattern: yyyy-mm-dd
+      description: 预期清算日期（可能受到账情况、节假日影响）(yyyy-MM-dd)，仅退款成功存在（SUCCESS, FINISHED）
 transactionItem:
   type: object
   properties:
diff --git a/src/document/openapi/cn/document.yml b/src/document/openapi/cn/document.yml
index 317eeb013..a82272519 100644
--- a/src/document/openapi/cn/document.yml
+++ b/src/document/openapi/cn/document.yml
@@ -1056,7 +1056,15 @@ paths:
                   transactions:
                     type: array
                     items:
-                      $ref: 'components_order.yml#/transactionItem'
+                      allOf:
+                        - $ref: 'components_order.yml#/transactionItem'
+                        - type: object
+                          properties:
+                            settlement_date:
+                              type: string
+                              format: date
+                              pattern: yyyy-mm-dd
+                              description: 预期清算日期（可能受到账情况、节假日影响）(yyyy-MM-dd)
   /gateway/partners/{partner_code}/settlements:
     get:
       summary: 查看清算详情
diff --git a/src/document/openapi/en/components_order.yml b/src/document/openapi/en/components_order.yml
index a46973900..934286a67 100644
--- a/src/document/openapi/en/components_order.yml
+++ b/src/document/openapi/en/components_order.yml
@@ -225,6 +225,11 @@ refundStatus:
       type: string
       example:
         AUD
+    settlement_date:
+      type: string
+      format: date
+      pattern: yyyy-mm-dd
+      description: target settlement date, maybe delay due to holidays and bank issues(yyyy-MM-dd). only exists when status is SUCCESS or FINISHED
 transactionItem:
   type: object
   properties:
diff --git a/src/document/openapi/en/document.yml b/src/document/openapi/en/document.yml
index cbbfc515e..3f39a4ed6 100644
--- a/src/document/openapi/en/document.yml
+++ b/src/document/openapi/en/document.yml
@@ -1075,7 +1075,15 @@ paths:
                   transactions:
                     type: array
                     items:
-                      $ref: 'components_order.yml#/transactionItem'
+                      allOf:
+                        - $ref: 'components_order.yml#/transactionItem'
+                        - type: object
+                          properties:
+                            settlement_date:
+                              type: string
+                              format: date
+                              pattern: yyyy-mm-dd
+                              description: target settlement date, maybe delay due to holidays and bank issues(yyyy-MM-dd)
   /gateway/partners/{partner_code}/settlements:
     get:
       summary: 查看清算详情