diff --git a/be/src/vec/exec/format/generic_reader.h b/be/src/vec/exec/format/generic_reader.h
index 7842f2edb9..beac88f1ab 100644
--- a/be/src/vec/exec/format/generic_reader.h
+++ b/be/src/vec/exec/format/generic_reader.h
@@ -39,10 +39,6 @@ public:
 
     virtual Status get_next_block(Block* block, size_t* read_rows, bool* eof) = 0;
 
-    virtual std::unordered_map<std::string, TypeDescriptor> get_name_to_type() {
-        std::unordered_map<std::string, TypeDescriptor> map;
-        return map;
-    }
     virtual Status get_columns(std::unordered_map<std::string, TypeDescriptor>* name_to_type,
                                std::unordered_set<std::string>* missing_cols) {
         return Status::NotSupported("get_columns is not implemented");
diff --git a/be/src/vec/exec/format/orc/vorc_reader.cpp b/be/src/vec/exec/format/orc/vorc_reader.cpp
index 21c94bad8c..0254c2b855 100644
--- a/be/src/vec/exec/format/orc/vorc_reader.cpp
+++ b/be/src/vec/exec/format/orc/vorc_reader.cpp
@@ -991,16 +991,6 @@ TypeDescriptor OrcReader::_convert_to_doris_type(const orc::Type* orc_type) {
     }
 }
 
-std::unordered_map<std::string, TypeDescriptor> OrcReader::get_name_to_type() {
-    std::unordered_map<std::string, TypeDescriptor> map;
-    auto& root_type = _reader->getType();
-    for (int i = 0; i < root_type.getSubtypeCount(); ++i) {
-        map.emplace(_get_field_name_lower_case(&root_type, i),
-                    _convert_to_doris_type(root_type.getSubtype(i)));
-    }
-    return map;
-}
-
 Status OrcReader::get_columns(std::unordered_map<std::string, TypeDescriptor>* name_to_type,
                               std::unordered_set<std::string>* missing_cols) {
     auto& root_type = _reader->getType();
diff --git a/be/src/vec/exec/format/orc/vorc_reader.h b/be/src/vec/exec/format/orc/vorc_reader.h
index 801becf068..5b50166bcb 100644
--- a/be/src/vec/exec/format/orc/vorc_reader.h
+++ b/be/src/vec/exec/format/orc/vorc_reader.h
@@ -169,7 +169,6 @@ public:
 
     int64_t size() const;
 
-    std::unordered_map<std::string, TypeDescriptor> get_name_to_type() override;
     Status get_columns(std::unordered_map<std::string, TypeDescriptor>* name_to_type,
                        std::unordered_set<std::string>* missing_cols) override;
 
diff --git a/be/src/vec/exec/format/parquet/vparquet_reader.cpp b/be/src/vec/exec/format/parquet/vparquet_reader.cpp
index 25c1f46aed..dc541cd789 100644
--- a/be/src/vec/exec/format/parquet/vparquet_reader.cpp
+++ b/be/src/vec/exec/format/parquet/vparquet_reader.cpp
@@ -459,18 +459,6 @@ Status ParquetReader::set_fill_columns(
     return Status::OK();
 }
 
-std::unordered_map<std::string, TypeDescriptor> ParquetReader::get_name_to_type() {
-    std::unordered_map<std::string, TypeDescriptor> map;
-    const auto& schema_desc = _file_metadata->schema();
-    std::unordered_set<std::string> column_names;
-    schema_desc.get_column_names(&column_names);
-    for (auto& name : column_names) {
-        auto field = schema_desc.get_column(name);
-        map.emplace(name, field->type);
-    }
-    return map;
-}
-
 Status ParquetReader::get_parsed_schema(std::vector<std::string>* col_names,
                                         std::vector<TypeDescriptor>* col_types) {
     RETURN_IF_ERROR(_open_file());
diff --git a/be/src/vec/exec/format/parquet/vparquet_reader.h b/be/src/vec/exec/format/parquet/vparquet_reader.h
index 57106e7db3..8c763b236f 100644
--- a/be/src/vec/exec/format/parquet/vparquet_reader.h
+++ b/be/src/vec/exec/format/parquet/vparquet_reader.h
@@ -128,7 +128,6 @@ public:
 
     int64_t size() const { return _file_reader->size(); }
 
-    std::unordered_map<std::string, TypeDescriptor> get_name_to_type() override;
     Status get_columns(std::unordered_map<std::string, TypeDescriptor>* name_to_type,
                        std::unordered_set<std::string>* missing_cols) override;