Abstract: The selection of Daxing＇an Mountain range nearly 30 years meteorological data, to analyze the impact of cold wave weather process in Daxing＇an Mountain range region .The results show that the Daxing＇an Mountain range region have negative effects on the southward cold air, and stronger during the cold weather effects on the north slope than on the south slope .so the north slope is more colder and dry.