diff --git a/src/gausskernel/runtime/executor/execQual.cpp b/src/gausskernel/runtime/executor/execQual.cpp
index bde719c9ed50688717a9f9f79c3287d49158ebeb..50fe7021a8ee84b60ed59624cd043ec6a54de02f 100644
--- a/src/gausskernel/runtime/executor/execQual.cpp
+++ b/src/gausskernel/runtime/executor/execQual.cpp
@@ -2990,6 +2990,10 @@ static Datum ExecMakeFunctionResultNoSets(
            pfree_ext(var_dno);
    }
 
+   if (node != NULL) {
+       pfree_ext(node);
+   }
+
    u_sess->SPI_cxt.is_stp = savedIsSTP;
    u_sess->SPI_cxt.is_proconfig_set = savedProConfigIsSet;
    if (needResetErrMsg) {