diff --git a/application/dao/__init__.py b/application/dao/__init__.py
index 7aa926b858d05a405635493e8ce47bb4bd7f8ac2..2e9edd7553462cf0600d98e21effc9899e117a26 100644
--- a/application/dao/__init__.py
+++ b/application/dao/__init__.py
@@ -11,3 +11,4 @@
 """
 
 from .user import UserDao
+from .log import LogDao
diff --git a/application/dao/log.py b/application/dao/log.py
new file mode 100644
index 0000000000000000000000000000000000000000..66827f726bf39c98dcbac6fd2a7633a5cbde0b07
--- /dev/null
+++ b/application/dao/log.py
@@ -0,0 +1,168 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+# @Version     : Python 3.11.4
+# @Software    : Sublime Text 4
+# @Author      : StudentCWZ
+# @Email       : StudentCWZ@outlook.com
+# @Date        : 2023/11/20 09:57
+# @File        : log.py
+# @Description :
+"""
+
+
+from loguru import logger
+
+from application.utils import ElasticsearchUtil
+from application.libs.helper import MySQLHelper
+from application.utils import ParseUtil
+from application.models import Log
+
+
+class LogDao:
+    """
+    Data Access Object for logs.
+    This class includes methods to get data from Elasticsearch, process it and save it to MySQL.
+    """
+
+    @classmethod
+    def get_data_from_es(cls, index=None, dsl=None, sid=None) -> dict:
+        """
+        Get data from Elasticsearch by either scroll searching or direct searching.
+
+        Args:
+            index (str): The name of the Elasticsearch index.
+            dsl (dict): The DSL query for Elasticsearch.
+            sid (str): The scroll id for Elasticsearch scroll search.
+
+        Returns:
+            dict: The data returned from Elasticsearch.
+
+        Raises:
+            SystemError: If none of the required parameters are provided.
+        """
+        if sid is not None:
+            return ElasticsearchUtil.scroll_search(sid)
+        elif index is not None and dsl is not None:
+            return ElasticsearchUtil.search(index, dsl)
+        else:
+            raise SystemError('Could not get data from Elasticsearch')
+
+    @classmethod
+    def get_mdata(cls, data: dict) -> list:
+        """
+        Get metadata from the data returned by Elasticsearch.
+
+        Args:
+            data (dict): The data returned from Elasticsearch.
+
+        Returns:
+            list: The metadata extracted from the data.
+
+        Raises:
+            SystemError: If the metadata is empty.
+        """
+        mdata = data.get('hits').get('hits')
+        if not mdata:
+            logger.error('the mdata is an empty list ...')
+            raise SystemError('the mdata is an empty list ...')
+        return mdata
+
+    @classmethod
+    def get_intent_from_mysql(cls, sql: str, cfg: dict) -> list:
+        """
+        Get the intent mapping from MySQL using the provided SQL.
+
+        Args:
+            sql (str): The SQL query to execute.
+            cfg (dict): The configuration for MySQL.
+
+        Returns:
+            list: The intent mapping list.
+        """
+        with MySQLHelper(**cfg) as helper:
+            result = helper.execute(sql)
+        mapping_list = [item[0] for item in result]
+        return mapping_list
+
+    @classmethod
+    def process_and_save_data(cls, lst: list, mapping_list: list):
+        """
+        Process the given list using the mapping list and save the result to the database.
+
+        Args:
+            lst (list): The list to process.
+            mapping_list (list): The mapping list to use for processing.
+        """
+        if not lst:
+            return
+        result_generator = ParseUtil(mapping_list=mapping_list).filter(lst)
+        _ = Log.batch_save(result_generator)
+
+    @classmethod
+    def parse(cls, start: str, end: str, index: str, sql: str, cfg: dict) -> int:
+        """
+        Parse logs from Elasticsearch and save them to MySQL.
+
+        Args:
+            start (str): The start date for the logs.
+            end (str): The end date for the logs.
+            index (str): The Elasticsearch index to get logs from.
+            sql (str): The SQL query to get the intent mapping from MySQL.
+            cfg (dict): The configuration for MySQL.
+
+        Returns:
+            int: The total number of logs parsed.
+
+        Raises:
+            SystemError: If there is an error during the process.
+        """
+
+        # Get the DSL for the given start and end dates.
+        dsl = ElasticsearchUtil.dsl(start, end)
+
+        # Get data from Elasticsearch.
+        data = cls.get_data_from_es(index=index, dsl=dsl)
+
+        # Extract metadata from the data.
+        mdata = cls.get_mdata(data)
+
+        # Get the total number of logs.
+        total = data.get('hits').get('total').get('value')
+        logger.debug(f'The numbers of data by searching data from ES: {total}')
+
+        # Log the start of the searching and saving process.
+        logger.debug('The data is inserting ...')
+
+        # Get the intent mapping from MySQL.
+        mapping_list = cls.get_intent_from_mysql(sql, cfg)
+
+        # Process and save the metadata.
+        cls.process_and_save_data(mdata, mapping_list)
+
+        # Get the scroll id for scroll searching in Elasticsearch.
+        scroll_id = data.get('_scroll_id')
+
+        try:
+            for _ in range(0, int(total / dsl.get('size', 10000) + 1)):
+                # Get more data from Elasticsearch using scroll searching.
+                res = cls.get_data_from_es(sid=scroll_id)
+                lst = res.get('hits').get('hits')
+
+                if not lst:
+                    continue
+
+                # Process and save the data.
+                cls.process_and_save_data(lst, mapping_list)
+        except Exception as e:
+            # Log the error and raise a SystemError.
+            logger.error(f'The error: {e}')
+            raise SystemError()
+        else:
+            # Log the success of the process.
+            logger.debug('The process of inserting data succeed!')
+        finally:
+            # Log the end of the process.
+            logger.debug('The inserting of the data finished!')
+
+        return total
diff --git a/application/services/log.py b/application/services/log.py
index d11e29bc47a627fce560963e708ac41e7e7c8772..ebf17bc3c4a0d6b67aedb833590e879afb7d6a85 100644
--- a/application/services/log.py
+++ b/application/services/log.py
@@ -10,24 +10,48 @@
 # @Description :
 """
 
+
 from flask import current_app
 from loguru import logger
 
-from application.utils import ElasticsearchUtil
-from application.libs.helper import MySQLHelper
-from application.utils import ParseUtil
-from application.models import Log
+from application.dao import LogDao
+from application.schemas import ParseLogRequestItem
 
 
 class LogService:
 
     @classmethod
-    def parse(cls, item) -> int:
+    def parse(cls, item: ParseLogRequestItem) -> int:
+        """
+        Parse logs from Elasticsearch and process them according to the configured SQL commands.
+
+        Args:
+            item: The item containing the start and end dates for which logs are to be parsed.
+
+        Returns:
+            The result of the log parsing as an integer.
+
+        Raises:
+            SystemError: If there is an issue with the process.
+        """
+
+        # Retrieve the start and end date from the given item.
         start_date = item.start
         end_date = item.end
-        es_index = current_app.config.Elasticsearch.Index
+
+        # Log the time interval for debugging purposes.
+        logger.debug(f'The interval of time is between {start_date} and {end_date}...')
+
+        # Retrieve the Elasticsearch index from the current application's configuration.
+        index = current_app.config.Elasticsearch.Index
+
+        # Retrieve the MySQL configuration from the current application's configuration.
         mysql_config = current_app.config.ExtraDB
+
+        # Retrieve the SQL to be executed from the MySQL configuration.
         sql = mysql_config.Sql
+
+        # Construct a configuration dictionary for the MySQL database.
         cfg = {
             'host': mysql_config.Host,
             'user': mysql_config.User,
@@ -35,44 +59,6 @@ class LogService:
             'db': mysql_config.DB,
             'port': mysql_config.Port,
         }
-        logger.debug(
-            f'The interval of time is between {start_date} and {end_date} ...')
-        dsl = ElasticsearchUtil.dsl(start_date, end_date, size=2500)
-        data = ElasticsearchUtil.search(es_index, dsl)
-        # 获取 mdata
-        mdata = data.get('hits').get('hits')
-        if not mdata:
-            logger.error('the mdata is an empty list ...')
-            raise SystemError('the mdata is an empty list ...')
-        # 获取 total
-        total = data.get('hits').get('total').get('value')
-        logger.debug(f'The numbers of data by searching data from ES: {total}')
-        with MySQLHelper(**cfg) as helper:
-            result = helper.execute(sql)
-        mapping_list = [item[0] for item in result]
-        result = ParseUtil(mapping_list=mapping_list).filter(mdata)
-        logger.debug('The first part of data is inserting ...')
-        _ = Log.batch_save(result)
-        logger.debug('The inserting of the first part data finished!')
-        logger.debug('The scrolling part of data is inserting ...')
-        # 获取 scroll_id
-        scroll_id = data.get('_scroll_id')
-        try:
-            for _ in range(0, int(total / dsl.get('size', 10000) + 1)):
-                res = ElasticsearchUtil.scroll_search(scroll_id)
-                lst = res.get('hits').get('hits')
-                if not lst:
-                    continue
-                result_generator = ParseUtil(
-                    mapping_list=mapping_list).filter(lst)
-                _ = Log.batch_save(result_generator)
-        except Exception as e:
-            # 输出 log 信息
-            logger.error(f'The error: {e}')
-            raise SystemError()
-        else:
-            logger.debug('The process of inserting scrolling part data succeed!')
-        finally:
-            logger.debug('The inserting of the scrolling part data finished!')
-
-        return total
+
+        # Parse the logs using the LogDao class and return the result.
+        return LogDao.parse(start_date, end_date, index, sql, cfg)
diff --git a/application/views/log/log.py b/application/views/log/log.py
index d4ac8d6b7c167c5a7259bcb7408cf267b366ad89..4e05da8e568dc40d5299b2068c9f47d048bd0aea 100644
--- a/application/views/log/log.py
+++ b/application/views/log/log.py
@@ -10,7 +10,7 @@
 # @Description :
 """
 
-from flask import Blueprint, request, jsonify
+from flask import Blueprint, current_app, request, jsonify
 from flask_restful import Api
 from loguru import logger
 from pydantic import ValidationError