diff --git a/include/libs/nodes/plannodes.h b/include/libs/nodes/plannodes.h
index b2ae1b4c6717018e997ae0825a60cfb907a2fbc0..0f0a0176fb4799b1f458acb66c55c22a6a5980f9 100644
--- a/include/libs/nodes/plannodes.h
+++ b/include/libs/nodes/plannodes.h
@@ -143,6 +143,7 @@ typedef struct SScanPhysiNode {
   int32_t order;         // scan order: TSDB_ORDER_ASC|TSDB_ORDER_DESC
   int32_t count;         // repeat count
   int32_t reverse;       // reverse scan count
+  SName tableName;
 } SScanPhysiNode;
 
 typedef SScanPhysiNode SSystemTableScanPhysiNode;
@@ -217,7 +218,6 @@ typedef struct SSubplan {
   SNodeList* pParents;     // the data destination subplan, get data from current subplan
   SPhysiNode* pNode;        // physical plan of current subplan
   SDataSinkNode* pDataSink;    // data of the subplan flow into the datasink
-  SName tableName; // scan table
 } SSubplan;
 
 typedef struct SQueryPlan {
diff --git a/source/libs/nodes/src/nodesCodeFuncs.c b/source/libs/nodes/src/nodesCodeFuncs.c
index 5e5c3d862ef805df7df68e9763b6d0b0c862cde1..875f19b6606b2203463b81626ddb77914666a688 100644
--- a/source/libs/nodes/src/nodesCodeFuncs.c
+++ b/source/libs/nodes/src/nodesCodeFuncs.c
@@ -1261,6 +1261,38 @@ static int32_t jsonToSlotDescNode(const SJson* pJson, void* pObj) {
   return code;
 }
 
+static const char* jkDownstreamSourceAddr = "Addr";
+static const char* jkDownstreamSourceTaskId = "TaskId";
+static const char* jkDownstreamSourceSchedId = "SchedId";
+
+static int32_t downstreamSourceNodeToJson(const void* pObj, SJson* pJson) {
+  const SDownstreamSourceNode* pNode = (const SDownstreamSourceNode*)pObj;
+
+  int32_t code = tjsonAddObject(pJson, jkDownstreamSourceAddr, queryNodeAddrToJson, &pNode->addr);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkDownstreamSourceTaskId, pNode->taskId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkDownstreamSourceSchedId, pNode->schedId);
+  }
+
+  return code;
+}
+
+static int32_t jsonToDownstreamSourceNode(const SJson* pJson, void* pObj) {
+  SDownstreamSourceNode* pNode = (SDownstreamSourceNode*)pObj;
+
+  int32_t code = tjsonToObject(pJson, jkDownstreamSourceAddr, jsonToQueryNodeAddr, &pNode->addr);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetUBigIntValue(pJson, jkDownstreamSourceTaskId, &pNode->taskId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetUBigIntValue(pJson, jkDownstreamSourceSchedId, &pNode->schedId);
+  }
+
+  return code;
+}
+
 static const char* jkDataBlockDescDataBlockId = "DataBlockId";
 static const char* jkDataBlockDescSlots = "Slots";
 static const char* jkDataBlockResultRowSize = "ResultRowSize";
@@ -1381,6 +1413,9 @@ static int32_t specificNodeToJson(const void* pObj, SJson* pJson) {
     case QUERY_NODE_SLOT_DESC:
       return slotDescNodeToJson(pObj, pJson);
     case QUERY_NODE_COLUMN_DEF:
+      break;
+    case QUERY_NODE_DOWNSTREAM_SOURCE:
+      return downstreamSourceNodeToJson(pObj, pJson);
     case QUERY_NODE_SET_OPERATOR:
       break;
     case QUERY_NODE_SELECT_STMT:
@@ -1470,6 +1505,8 @@ static int32_t jsonToSpecificNode(const SJson* pJson, void* pObj) {
       return jsonToDataBlockDescNode(pJson, pObj);
     case QUERY_NODE_SLOT_DESC:
       return jsonToSlotDescNode(pJson, pObj);
+    case QUERY_NODE_DOWNSTREAM_SOURCE:
+      return jsonToDownstreamSourceNode(pJson, pObj);
     // case QUERY_NODE_SET_OPERATOR:
     //   break;
     // case QUERY_NODE_SELECT_STMT: