diff --git a/orm/blue_forecast.py b/orm/blue_forecast.py
index c324bd1..e02dc2b 100644
--- a/orm/blue_forecast.py
+++ b/orm/blue_forecast.py
@@ -1,12 +1,66 @@
-from orm_db import *
-from sqlalchemy import select, desc
-
-try:
-    get_last_data_stmt = select(History).order_by(desc('id')).limit(1)
-    last_data_result = db_session.execute(get_last_data_stmt).scalar()
-    print(last_data_result)
-except Exception as e:
-    print(e)
-
-last_blue = last_data_result.blue
-print(last_blue)
\ No newline at end of file
+from db import *
+from util import *
+
+
+# last_data = get_last_data()
+# print(last_data)
+#
+# date_id_data = get_data_by_date_id('2023068')
+# print(date_id_data)
+
+# 获取全部数据
+def get_all_data():
+    return db_get_all_data()
+
+
+# 获取所有篮球的统计数据
+def get_all_blue():
+    all_blue = dict()
+    all_data = db_get_all_data()
+    if all_data is not False:
+        for data in all_data:
+            if data['blue'] in all_blue.keys():
+                all_blue[data['blue']] += 1
+            else:
+                all_blue[data['blue']] = 1
+        return dict_sort(all_blue)
+    else:
+        return False
+
+
+# 获取蓝球统计次数与平均值的额偏差
+def get_delta_blue(_blue_data):
+    total = 0
+    if _blue_data is not False:
+        for _num in _blue_data.values():
+            total += _num
+        average = total / len(_blue_data.keys())
+        print(average)
+        _delta_blue_dict = dict()
+        for _key, _val in _blue_data.items():
+            _delta_blue_dict[_key] = _blue_data[_key] - average
+        return _delta_blue_dict
+
+
+print(get_delta_blue(get_all_blue()))
+
+
+# 获取预测的数据
+def get_blue_forecast(_blue_data, _method, _num):
+    last_blue = db_get_last_data()['blue']
+    if last_blue is False:
+        return False
+    if _method == 'prv':  # 当前一期往前推num期，包含此期数据
+        prv_blue_id_list = []
+        for _data in _blue_data:
+            if _data['blue'] == last_blue:
+                print(_data)
+                prv_blue_id_list.append(_data['id'])
+        print(prv_blue_id_list)
+    elif _method == 'post':  # 当前一期往后num期，不包含此期的数据
+        pass
+    else:
+        return False
+
+
+get_blue_forecast(get_all_data(), 'prv', 5)
diff --git a/orm/db.py b/orm/db.py
new file mode 100644
index 0000000..ae5c707
--- /dev/null
+++ b/orm/db.py
@@ -0,0 +1,62 @@
+from orm_db import History, BlueForecastFiveAll, BlueForecastThreeAll, RedForecastAll
+from sqlalchemy import engine
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy import select, desc, asc
+
+# 初始化数据库实例
+DB_URI = 'mysql+pymysql://root:Sxzgx1209@home.rogersun.cn:3306/lottery'
+db_engine = engine.create_engine(DB_URI, encoding='utf8', echo=True)
+db_session = sessionmaker(bind=db_engine)()
+
+
+def db_get_last_data():
+    try:
+        get_last_data_stmt = select(History).order_by(desc('id')).limit(1)
+        last_data_result = db_session.execute(get_last_data_stmt).scalar()
+        return history_scalar(last_data_result)
+    except Exception as e:
+        print(e)
+        return False
+
+
+def db_get_all_data():
+    try:
+        get_all_data_stmt = select(History).order_by(asc(History.id))
+        all_data_result = db_session.execute(get_all_data_stmt).scalars()
+        return history_scalars(all_data_result)
+    except Exception as e:
+        print(e)
+        return False
+
+
+def db_get_data_by_date_id(_date_id):
+    try:
+        get_by_open_date_stmt = select(History).where(History.dateId == _date_id)
+        open_date_result = db_session.execute(get_by_open_date_stmt).scalar()
+        return history_scalar(open_date_result)
+    except Exception as e:
+        print(e)
+        return False
+
+
+def history_scalar(_scalar):
+    _data = dict()
+    _data['id'] = _scalar.id
+    _data['dateId'] = _scalar.dateId
+    _data['openDate'] = _scalar.openDate
+    _data['red'] = _scalar.red
+    _data['blue'] = _scalar.blue
+    return _data
+
+
+def history_scalars(_scalars):
+    _list = []
+    for row in _scalars:
+        _data = dict()
+        _data['id'] = row.id
+        _data['dateId'] = row.dateId
+        _data['openDate'] = row.openDate
+        _data['red'] = row.red
+        _data['blue'] = row.blue
+        _list.append(_data)
+    return _list
diff --git a/orm/orm_db.py b/orm/orm_db.py
index 75ef3a8..287c4e2 100644
--- a/orm/orm_db.py
+++ b/orm/orm_db.py
@@ -72,5 +72,5 @@ class RedForecastAll(Base):
 # 创建数据表，下面部分没有联想
 Base.metadata.create_all(engine)
 
-Session_class = sessionmaker(bind=engine)  # 创建与数据引擎的绑定会话类
-db_session = Session_class()  # 实例化session连接
+# Session_class = sessionmaker(bind=engine)  # 创建与数据引擎的绑定会话类
+# db_session = Session_class()  # 实例化session连接
diff --git a/orm/util.py b/orm/util.py
new file mode 100644
index 0000000..9ad0ce7
--- /dev/null
+++ b/orm/util.py
@@ -0,0 +1,10 @@
+def dict_sort(_dict, _sort_by='key', _reverse=False):
+    if _sort_by == 'key':
+        _result = sorted(_dict.items(), key=lambda x: x[0], reverse=_reverse)
+    else:
+        _result = sorted(_dict.items(), key=lambda x: x[1], reverse=_reverse)
+    _result_dict = dict()
+
+    for r in _result:
+        _result_dict[r[0]] = r[1]
+    return _result_dict