diff --git a/be/src/vec/exec/format/parquet/byte_array_dict_decoder.cpp b/be/src/vec/exec/format/parquet/byte_array_dict_decoder.cpp
index 7d9f708011c4e5..4be7cb8b667950 100644
--- a/be/src/vec/exec/format/parquet/byte_array_dict_decoder.cpp
+++ b/be/src/vec/exec/format/parquet/byte_array_dict_decoder.cpp
@@ -32,6 +32,9 @@ namespace doris::vectorized {
 Status ByteArrayDictDecoder::set_dict(std::unique_ptr<uint8_t[]>& dict, int32_t length,
                                       size_t num_values) {
     _dict = std::move(dict);
+    if (_dict == nullptr) {
+        return Status::Corruption("Wrong dictionary data for byte array type, dict is null.");
+    }
     _dict_items.reserve(num_values);
     uint32_t offset_cursor = 0;
     char* dict_item_address = reinterpret_cast<char*>(_dict.get());
diff --git a/be/src/vec/exec/format/parquet/fix_length_dict_decoder.hpp b/be/src/vec/exec/format/parquet/fix_length_dict_decoder.hpp
index 0bcc0bd5e73a40..6e7d3c7b99d8e0 100644
--- a/be/src/vec/exec/format/parquet/fix_length_dict_decoder.hpp
+++ b/be/src/vec/exec/format/parquet/fix_length_dict_decoder.hpp
@@ -107,6 +107,9 @@ class FixLengthDictDecoder final : public BaseDictDecoder {
             return Status::Corruption("Wrong dictionary data for fixed length type");
         }
         _dict = std::move(dict);
+        if (_dict == nullptr) {
+            return Status::Corruption("Wrong dictionary data for byte array type, dict is null.");
+        }
         char* dict_item_address = reinterpret_cast<char*>(_dict.get());
         _dict_items.resize(num_values);
         for (size_t i = 0; i < num_values; ++i) {