diff --git a/be/src/vec/exec/format/orc/vorc_reader.cpp b/be/src/vec/exec/format/orc/vorc_reader.cpp
index cffa934cc2c740..16a3c1254c62eb 100644
--- a/be/src/vec/exec/format/orc/vorc_reader.cpp
+++ b/be/src/vec/exec/format/orc/vorc_reader.cpp
@@ -1140,8 +1140,9 @@ Status OrcReader::_decode_string_non_dict_encoded_column(const std::string& col_
         if (cvb->hasNulls) {
             for (int i = 0; i < num_values; ++i) {
                 if (cvb->notNull[i]) {
-                    string_values.emplace_back(cvb->data[i],
-                                               trim_right(cvb->data[i], cvb->length[i]));
+                    size_t length = trim_right(cvb->data[i], cvb->length[i]);
+                    string_values.emplace_back((length > 0) ? cvb->data[i] : empty_string.data(),
+                                               length);
                 } else {
                     // Orc doesn't fill null values in new batch, but the former batch has been release.
                     // Other types like int/long/timestamp... are flat types without pointer in them,
@@ -1151,21 +1152,26 @@ Status OrcReader::_decode_string_non_dict_encoded_column(const std::string& col_
             }
         } else {
             for (int i = 0; i < num_values; ++i) {
-                string_values.emplace_back(cvb->data[i], trim_right(cvb->data[i], cvb->length[i]));
+                size_t length = trim_right(cvb->data[i], cvb->length[i]);
+                string_values.emplace_back((length > 0) ? cvb->data[i] : empty_string.data(),
+                                           length);
             }
         }
     } else {
         if (cvb->hasNulls) {
             for (int i = 0; i < num_values; ++i) {
                 if (cvb->notNull[i]) {
-                    string_values.emplace_back(cvb->data[i], cvb->length[i]);
+                    string_values.emplace_back(
+                            (cvb->length[i] > 0) ? cvb->data[i] : empty_string.data(),
+                            cvb->length[i]);
                 } else {
                     string_values.emplace_back(empty_string.data(), 0);
                 }
             }
         } else {
             for (int i = 0; i < num_values; ++i) {
-                string_values.emplace_back(cvb->data[i], cvb->length[i]);
+                string_values.emplace_back(
+                        (cvb->length[i] > 0) ? cvb->data[i] : empty_string.data(), cvb->length[i]);
             }
         }
     }
@@ -1204,7 +1210,8 @@ Status OrcReader::_decode_string_dict_encoded_column(const std::string& col_name
                     if (length > max_value_length) {
                         max_value_length = length;
                     }
-                    string_values.emplace_back(val_ptr, length);
+                    string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                               length);
                 } else {
                     // Orc doesn't fill null values in new batch, but the former batch has been release.
                     // Other types like int/long/timestamp... are flat types without pointer in them,
@@ -1227,7 +1234,8 @@ Status OrcReader::_decode_string_dict_encoded_column(const std::string& col_name
                 if (length > max_value_length) {
                     max_value_length = length;
                 }
-                string_values.emplace_back(val_ptr, length);
+                string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                           length);
             }
         }
     } else {
@@ -1246,7 +1254,8 @@ Status OrcReader::_decode_string_dict_encoded_column(const std::string& col_name
                     if (length > max_value_length) {
                         max_value_length = length;
                     }
-                    string_values.emplace_back(val_ptr, length);
+                    string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                               length);
                 } else {
                     string_values.emplace_back(EMPTY_STRING_FOR_OVERFLOW, 0);
                 }
@@ -1265,7 +1274,8 @@ Status OrcReader::_decode_string_dict_encoded_column(const std::string& col_name
                 if (length > max_value_length) {
                     max_value_length = length;
                 }
-                string_values.emplace_back(val_ptr, length);
+                string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                           length);
             }
         }
     }
@@ -2068,7 +2078,7 @@ Status OrcReader::on_string_dicts_loaded(
             char* val_ptr;
             int64_t length;
             dict->getValueByIndex(i, val_ptr, length);
-            StringRef dict_value(val_ptr, length);
+            StringRef dict_value((length > 0) ? val_ptr : "", length);
             if (length > max_value_length) {
                 max_value_length = length;
             }
@@ -2328,7 +2338,8 @@ MutableColumnPtr OrcReader::_convert_dict_column_to_string_column(
                     if (length > max_value_length) {
                         max_value_length = length;
                     }
-                    string_values.emplace_back(val_ptr, length);
+                    string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                               length);
                 } else {
                     // Orc doesn't fill null values in new batch, but the former batch has been release.
                     // Other types like int/long/timestamp... are flat types without pointer in them,
@@ -2346,7 +2357,8 @@ MutableColumnPtr OrcReader::_convert_dict_column_to_string_column(
                 if (length > max_value_length) {
                     max_value_length = length;
                 }
-                string_values.emplace_back(val_ptr, length);
+                string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                           length);
             }
         }
     } else {
@@ -2361,7 +2373,8 @@ MutableColumnPtr OrcReader::_convert_dict_column_to_string_column(
                     if (length > max_value_length) {
                         max_value_length = length;
                     }
-                    string_values.emplace_back(val_ptr, length);
+                    string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                               length);
                 } else {
                     string_values.emplace_back(EMPTY_STRING_FOR_OVERFLOW, 0);
                 }
@@ -2375,7 +2388,8 @@ MutableColumnPtr OrcReader::_convert_dict_column_to_string_column(
                 if (length > max_value_length) {
                     max_value_length = length;
                 }
-                string_values.emplace_back(val_ptr, length);
+                string_values.emplace_back((length > 0) ? val_ptr : EMPTY_STRING_FOR_OVERFLOW,
+                                           length);
             }
         }
     }