diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 67df5ac8e825c2efdd8159c706518a6caa55aa89..891879e6b2d81a1ca0eaefe1182df201dfacdd20 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1286,6 +1286,17 @@ static int32_t validateStateWindowNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SS
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg6);
   }
 
+  size_t size = tscNumOfExprs(pQueryInfo);
+  for (int32_t i = 0; i < size; ++i) {
+    SExprInfo* pExpr = tscExprGet(pQueryInfo, i);
+    assert(pExpr != NULL);
+
+    int32_t functionId = pExpr->base.functionId;
+    if (functionId == TSDB_FUNC_CSUM || functionId == TSDB_FUNC_MAVG) {
+      return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg6);
+    }
+  }
+  
   tscColumnListInsert(pQueryInfo->colList, index.columnIndex, pTableMeta->id.uid, pSchema);
   SColIndex colIndex = { .colIndex = index.columnIndex, .flag = TSDB_COL_NORMAL, .colId = pSchema->colId };
   taosArrayPush(pGroupExpr->columnInfo, &colIndex);
@@ -7648,8 +7659,8 @@ int32_t validateFunctionsInIntervalOrGroupbyQuery(SSqlCmd* pCmd, SQueryInfo* pQu
     int32_t f = pExpr->base.functionId;
     if ((f == TSDB_FUNC_PRJ && pExpr->base.numOfParams == 0) ||
         f == TSDB_FUNC_DIFF || f == TSDB_FUNC_SCALAR_EXPR || f == TSDB_FUNC_DERIVATIVE ||
-        f == TSDB_FUNC_CSUM || f == TSDB_FUNC_MAVG || f == TSDB_FUNC_STATE_COUNT ||
-        f == TSDB_FUNC_STATE_DURATION)
+        f == TSDB_FUNC_CSUM || f == TSDB_FUNC_MAVG ||
+        f == TSDB_FUNC_STATE_COUNT || f == TSDB_FUNC_STATE_DURATION)
     {
       isProjectionFunction = true;
       break;
@@ -8649,8 +8660,13 @@ int32_t validateFunctionFromUpstream(SQueryInfo* pQueryInfo, char* msg) {
     SExprInfo* pExpr = tscExprGet(pQueryInfo, i);
   
     int32_t f = pExpr->base.functionId;
-    if (f == TSDB_FUNC_DERIVATIVE || f == TSDB_FUNC_TWA || f == TSDB_FUNC_IRATE || f == TSDB_FUNC_DIFF || f == TSDB_FUNC_ELAPSED ||
-        f == TSDB_FUNC_STATE_COUNT || f == TSDB_FUNC_STATE_DURATION) {
+    if (f == TSDB_FUNC_DERIVATIVE ||
+        f == TSDB_FUNC_TWA ||
+        f == TSDB_FUNC_IRATE ||
+        f == TSDB_FUNC_DIFF ||
+        f == TSDB_FUNC_ELAPSED ||
+        f == TSDB_FUNC_STATE_COUNT ||
+        f == TSDB_FUNC_STATE_DURATION) {
       for (int32_t j = 0; j < upNum; ++j) {
         SQueryInfo* pUp = taosArrayGetP(pQueryInfo->pUpstream, j);
         STableMetaInfo  *pTableMetaInfo = tscGetMetaInfo(pUp, 0);
diff --git a/tests/develop-test/2-query/TD-14763.py b/tests/develop-test/2-query/TD-14763.py
new file mode 100644
index 0000000000000000000000000000000000000000..e1c82e3ebf90621217899b79d93c6a49286c1cf8
--- /dev/null
+++ b/tests/develop-test/2-query/TD-14763.py
@@ -0,0 +1,47 @@
+import sys
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import tdDnodes
+from math import inf
+
+class TDTestCase:
+    def caseDescription(self):
+        '''
+        case1<shenglian zhou>: [TD-14763]csum can not be used on state window
+        '''
+        return
+    
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+        self._conn = conn 
+
+    def run(self):
+        print("running {}".format(__file__))
+        tdSql.execute("drop database if exists td14763")
+        tdSql.execute("create database td14763")
+        tdSql.execute("use td14763")
+
+        tdSql.execute("create table st ( ts timestamp, i int, b bool) tags (t1 int)")
+        tdSql.execute("create table ct1 using st tags(1)")
+        tdSql.execute("create table ct2 using st tags(2)")
+
+        for i in range(0, 4000, 2):
+            b = True if i%3 == 0 else False
+            tdSql.execute("insert into ct1 values(now + {}a, {}, {})".format(i, i, b))
+            tdSql.execute("insert into ct2 values(now + {}a, {}, {})".format(i+1, i+1, b))
+
+        tdSql.error("select csum(i) from  ct1 state_window(b)")
+        tdSql.error("select csum(i) from (select * from st) state_window(b)")
+        tdSql.query("select csum(i) from ct1");
+
+        tdSql.execute('drop database td14763')
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
+
diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index 77ab1f3b6b3a8fec48b38caf1e01c23514331fbc..ca3586a95e8bd0896206fa3ee17b8016cf848e7f 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -638,6 +638,7 @@
 6,,pytest,python3 test.py -f alter/alterColMultiTimes.py 
 6,,develop-test,python3 ./test.py -f 2-query/ts_2016.py 
 6,,develop-test,python3 ./test.py -f 2-query/escape.py 
+6,,develop-test,python3 ./test.py -f 2-query/TD-14763.py 
 5,,system-test,python3 ./test.py -f 4-taosAdapter/taosAdapter_insert.py 
 5,,system-test,python3 ./test.py -f 2-query/TD-12340-12342.py 
 5,,system-test,python3 ./test.py -f 2-query/TD-12276.py