diff --git a/buffalo/data/base.py b/buffalo/data/base.py
index 4ab5c78..f15428a 100644
--- a/buffalo/data/base.py
+++ b/buffalo/data/base.py
@@ -26,6 +26,7 @@ def __init__(self, opt, *args, **kwargs):
             self.prepro = getattr(prepro, self.opt.data.value_prepro.name)(self.opt.data.value_prepro)
             self.value_prepro = self.prepro
         self.data_type = None
+        self.temp_file_list = []
 
     @abc.abstractmethod
     def create_database(self, filename, **kwargs):
@@ -166,6 +167,12 @@ def close(self):
             self.handle = None
             self.header = None
 
+    def temp_file_clear(self):
+        for path in self.temp_file_list:
+            if os.path.isfile(path):
+                os.remove(path)
+        self.temp_file_list = []
+
     def _create_database(self, path, **kwargs):
         # Create database structure
         if os.path.exists(path):
@@ -469,6 +476,7 @@ def is_valid_option(self, opt) -> bool:
 class DataReader(object):
     def __init__(self, opt):
         self.opt = opt
+        self.temp_file_list = []
 
     def get_main_path(self):
         return self.opt.input.main
@@ -484,6 +492,7 @@ def _get_temporary_id_list_path(self, obj, name):
         if hasattr(self, field_name):
             return getattr(self, field_name)
         tmp_path = aux.get_temporary_file(self.opt.data.tmp_dir)
+        self.temp_file_list.append(tmp_path)
         with open(tmp_path, "w") as fout:
             if isinstance(obj, np.ndarray,) and obj.ndim == 1:
                 fout.write("\n".join(map(str, obj.tolist())))
@@ -493,3 +502,9 @@ def _get_temporary_id_list_path(self, obj, name):
                 raise RuntimeError(f"Unexpected data type for id list: {type(obj)}")
         setattr(self, field_name, tmp_path)
         return tmp_path
+
+    def temp_file_clear(self):
+        for path in self.temp_file_list:
+            if os.path.isfile(path):
+                os.remove(path)
+        self.temp_file_list = []
diff --git a/buffalo/data/mm.py b/buffalo/data/mm.py
index ee8e77b..fc64345 100644
--- a/buffalo/data/mm.py
+++ b/buffalo/data/mm.py
@@ -69,6 +69,7 @@ def get_main_path(self):
 
         log.get_logger("MatrixMarketDataReader").debug("creating temporary matrix-market data from numpy-kind array")
         tmp_path = aux.get_temporary_file(self.opt.data.tmp_dir)
+        self.temp_file_list.append(tmp_path)
         with open(tmp_path, "wb") as fout:
             if isinstance(main, (np.ndarray,)) and main.ndim == 2:
                 main = scipy.sparse.csr_matrix(main)
@@ -172,6 +173,7 @@ def _create_working_data(self, db, source_path, ignore_lines):
         vali_indexes = [] if "vali" not in db else db["vali"]["indexes"]
         vali_lines = []
         file_path = aux.get_temporary_file(self.opt.data.tmp_dir)
+        self.temp_file_list.append(file_path)
         with open(file_path, "w") as w:
             fin = open(source_path, mode="r")
             file_size = fin.seek(0, 2)
@@ -272,4 +274,6 @@ def create(self) -> h5py.File:
                 if os.path.isfile(self.path):
                     os.remove(self.path)
             raise
+        self.reader.temp_file_clear()
+        self.temp_file_clear()
         self.logger.info("DB built on %s" % data_path)
diff --git a/buffalo/data/stream.py b/buffalo/data/stream.py
index eb67af0..49e3130 100644
--- a/buffalo/data/stream.py
+++ b/buffalo/data/stream.py
@@ -171,6 +171,7 @@ def _build_sppmi(self, db, working_data_path, sppmi_total_lines, k):
         self.logger.debug("sort working_data")
         aux.psort(working_data_path, key=1)
         w_path = aux.get_temporary_file(root=self.opt.data.tmp_dir)
+        self.temp_file_list.append(w_path)
         self.logger.debug(f"build sppmi in_parallel. w: {w_path}")
         num_workers = psutil.cpu_count()
         nnz = parallel_build_sppmi(working_data_path, w_path, sppmi_total_lines, sz, k, num_workers)
@@ -207,7 +208,9 @@ def _create_working_data(self, db, stream_main_path, itemids,
             warnings.simplefilter("ignore", ResourceWarning)
             if with_sppmi:
                 w_sppmi = open(aux.get_temporary_file(root=self.opt.data.tmp_dir), "w")
+                self.temp_file_list.append(w_sppmi)
             file_path = aux.get_temporary_file(root=self.opt.data.tmp_dir)
+            self.temp_file_list.append(file_path)
             with open(stream_main_path) as fin, open(file_path, "w") as w:
                 total_index = 0
                 internal_data_type = self.opt.data.internal_data_type
@@ -308,4 +311,5 @@ def create(self) -> h5py.File:
                 if os.path.isfile(self.path):
                     os.remove(self.path)
             raise
+        self.temp_file_clear()
         self.logger.info("DB built on %s" % data_path)