diff --git a/be/src/exprs/function/array/function_array_pushback.cpp b/be/src/exprs/function/array/function_array_pushback.cpp
index 898c4d296902a6..7097613c7e2150 100644
--- a/be/src/exprs/function/array/function_array_pushback.cpp
+++ b/be/src/exprs/function/array/function_array_pushback.cpp
@@ -93,14 +93,15 @@ class FunctionArrayPushback : public IFunction {
 
         size_t off = 0;
         for (size_t i = 0; i < input_rows_count; ++i) {
-            if (array_null_map && array_null_map[i]) {
+            const size_t src_index = index_check_const(i, src_const);
+            if (array_null_map && array_null_map[src_index]) {
                 result_null_map[i] = 1;
                 result_offset_col[i] = off;
                 continue;
             }
 
-            size_t src_off = src_offset_col[index_check_const(i, src_const) - 1];
-            size_t src_len = src_offset_col[index_check_const(i, src_const)] - src_off;
+            size_t src_off = src_offset_col[src_index - 1];
+            size_t src_len = src_offset_col[src_index] - src_off;
             result_nested_data_col.insert_range_from(src_nested_data_col, src_off, src_len);
 
             result_nested_data_col.insert((*right_column)[index_check_const(i, right_const)]);
diff --git a/regression-test/data/query_p0/sql_functions/array_functions/test_array_functions_by_literal.out b/regression-test/data/query_p0/sql_functions/array_functions/test_array_functions_by_literal.out
index 5ebef1618f9855..9fe328a301ffca 100644
--- a/regression-test/data/query_p0/sql_functions/array_functions/test_array_functions_by_literal.out
+++ b/regression-test/data/query_p0/sql_functions/array_functions/test_array_functions_by_literal.out
@@ -932,6 +932,42 @@ _
 -- !sql --
 [null, null, null, null, 80]
 
+-- !sql --
+0	\N
+1	\N
+2	\N
+3	\N
+4	\N
+5	\N
+6	\N
+7	\N
+8	\N
+9	\N
+10	\N
+11	\N
+12	\N
+13	\N
+14	\N
+15	\N
+
+-- !sql --
+0	\N
+1	\N
+2	\N
+3	\N
+4	\N
+5	\N
+6	\N
+7	\N
+8	\N
+9	\N
+10	\N
+11	\N
+12	\N
+13	\N
+14	\N
+15	\N
+
 -- !sql --
 [0, 2, 129]
 
diff --git a/regression-test/suites/query_p0/sql_functions/array_functions/test_array_functions_by_literal.groovy b/regression-test/suites/query_p0/sql_functions/array_functions/test_array_functions_by_literal.groovy
index b51a0b6bd6bc24..600c6e3db93444 100644
--- a/regression-test/suites/query_p0/sql_functions/array_functions/test_array_functions_by_literal.groovy
+++ b/regression-test/suites/query_p0/sql_functions/array_functions/test_array_functions_by_literal.groovy
@@ -386,6 +386,8 @@ suite("test_array_functions_by_literal") {
         qt_sql "select array_pushback(array(cast (111.111 as decimalv3(6,3)),cast (222.222 as decimalv3(6,3))), cast (333.333 as decimalv3(6,3)))"
         qt_sql "select array_pushback([null,null], null)"
         qt_sql "select array_pushback([null,null,null,null], 80)"
+        qt_sql "select number, array_pushback(cast(null as array<int>), number) from numbers('number'='16') order by number"
+        qt_sql "select number, array_append(cast(null as array<int>), number) from numbers('number'='16') order by number"
 
         // array_cum_sum
         qt_sql "select array_cum_sum([0, 2, 127])"