diff --git a/src/accounting/transaction/form/transaction.py b/src/accounting/transaction/form/transaction.py
index 59ce032..baa398e 100644
--- a/src/accounting/transaction/form/transaction.py
+++ b/src/accounting/transaction/form/transaction.py
@@ -33,11 +33,11 @@ from accounting import db
 from accounting.locale import lazy_gettext
 from accounting.models import Transaction, Account, JournalEntry, \
     TransactionCurrency
-from accounting.transaction.summary_editor import SummaryEditor
+from accounting.transaction.utils.account_option import AccountOption
+from accounting.transaction.utils.summary_editor import SummaryEditor
 from accounting.utils.random_id import new_id
 from accounting.utils.strip_text import strip_multiline_text
 from accounting.utils.user import get_current_user_pk
-from .account_option import AccountOption
 from .currency import CurrencyForm, IncomeCurrencyForm, ExpenseCurrencyForm, \
     TransferCurrencyForm
 from .journal_entry import JournalEntryForm, DebitEntryForm, CreditEntryForm
diff --git a/src/accounting/transaction/utils/__init__.py b/src/accounting/transaction/utils/__init__.py
new file mode 100644
index 0000000..e8f75e2
--- /dev/null
+++ b/src/accounting/transaction/utils/__init__.py
@@ -0,0 +1,19 @@
+# The Mia! Accounting Flask Project.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/3/10
+
+#  Copyright (c) 2023 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+"""The utilities for the transaction management.
+
+"""
diff --git a/src/accounting/transaction/form/account_option.py b/src/accounting/transaction/utils/account_option.py
similarity index 100%
rename from src/accounting/transaction/form/account_option.py
rename to src/accounting/transaction/utils/account_option.py
diff --git a/src/accounting/transaction/operators.py b/src/accounting/transaction/utils/operators.py
similarity index 99%
rename from src/accounting/transaction/operators.py
rename to src/accounting/transaction/utils/operators.py
index c86f047..f8a1678 100644
--- a/src/accounting/transaction/operators.py
+++ b/src/accounting/transaction/utils/operators.py
@@ -26,7 +26,7 @@ from flask_wtf import FlaskForm
 from accounting.models import Transaction
 from accounting.template_globals import default_currency_code
 from accounting.utils.txn_types import TransactionType
-from .form import TransactionForm, IncomeTransactionForm, \
+from accounting.transaction.form import TransactionForm, IncomeTransactionForm, \
     ExpenseTransactionForm, TransferTransactionForm
 
 
diff --git a/src/accounting/transaction/summary_editor.py b/src/accounting/transaction/utils/summary_editor.py
similarity index 100%
rename from src/accounting/transaction/summary_editor.py
rename to src/accounting/transaction/utils/summary_editor.py
diff --git a/src/accounting/transaction/views.py b/src/accounting/transaction/views.py
index bb0d23e..acf9547 100644
--- a/src/accounting/transaction/views.py
+++ b/src/accounting/transaction/views.py
@@ -34,9 +34,9 @@ from accounting.utils.permission import has_permission, can_view, can_edit
 from accounting.utils.txn_types import TransactionType
 from accounting.utils.user import get_current_user_pk
 from .form import sort_transactions_in, TransactionReorderForm
-from .operators import TransactionOperator, TXN_TYPE_TO_OP, get_txn_op
 from .template_filters import with_type, to_transfer, format_amount_input, \
     text2html
+from .utils.operators import TransactionOperator, TXN_TYPE_TO_OP, get_txn_op
 
 bp: Blueprint = Blueprint("transaction", __name__)
 """The view blueprint for the transaction management."""
diff --git a/tests/test_summary_editor.py b/tests/test_summary_editor.py
index 35a728c..120d6f2 100644
--- a/tests/test_summary_editor.py
+++ b/tests/test_summary_editor.py
@@ -66,7 +66,7 @@ class SummeryEditorTestCase(unittest.TestCase):
 
         :return: None.
         """
-        from accounting.transaction.summary_editor import SummaryEditor
+        from accounting.transaction.utils.summary_editor import SummaryEditor
         for form in get_form_data(self.csrf_token):
             add_txn(self.client, form)
         with self.app.app_context():