diff --git a/source/libs/scalar/src/sclfunc.c b/source/libs/scalar/src/sclfunc.c
index 4ead1147e4..86456a6ae1 100644
--- a/source/libs/scalar/src/sclfunc.c
+++ b/source/libs/scalar/src/sclfunc.c
@@ -1992,7 +1992,7 @@ int32_t avgScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *
     }
   }
 
-  if (hasNull) {
+  if (hasNull || (count == 0)) {
     colDataAppendNULL(pOutputData, 0);
   } else {
     if (IS_SIGNED_NUMERIC_TYPE(type)) {