diff --git a/venus-shared/api/market/v1/method.md b/venus-shared/api/market/v1/method.md
index fd4ea1251e..6d749fc30b 100644
--- a/venus-shared/api/market/v1/method.md
+++ b/venus-shared/api/market/v1/method.md
@@ -265,6 +265,7 @@ Response:
     "Provider": "f01234",
     "Offset": 1032,
     "Length": 1032,
+    "PayloadSize": 42,
     "StartEpoch": 10101,
     "EndEpoch": 10101
   }
diff --git a/venus-shared/types/market/assigner_type.go b/venus-shared/types/market/assigner_type.go
index d177d4aede..1006a5cb58 100644
--- a/venus-shared/types/market/assigner_type.go
+++ b/venus-shared/types/market/assigner_type.go
@@ -76,6 +76,7 @@ type DirectDealInfo struct {
 	Provider     address.Address
 	Offset       abi.PaddedPieceSize
 	Length       abi.PaddedPieceSize
+	PayloadSize  uint64
 	StartEpoch   abi.ChainEpoch
 	EndEpoch     abi.ChainEpoch
 }