In order to establish and analyze the categories and application status of energy-saving products of building envelope in northern China, especially in severe cold and cold climate zones, the categories and statistic data of building envelope in northern China is gained in the classes of wall, door and window, through the way of referencing from the relevant literatures and data, investigating and visiting companies. The comparison and analysis of the date shows that the building envelop in northern China can basically meet the design requirement of heat preservation and energy-saving in severe cold and cold climate zones. Traditional products of building envelop are suitable for the multiple requirements and energy-saving need of modern architecture. Further research and development of new materials and technologies is needed but the restrain and lack of standardization in existing market should also be taken into consideration. The categories and statistic data in this paper play a reference role to other scholars and designers for researching the building envelop in severe cold and cold climate zones.