The building cold and hot loads calculation method for design-ers is spread and used in our country.There are total 301 kinds of commonwalls and roofs

which are classified as 6 types respectively.The cold loadtemperature tables are compiled for designers.With the development of build-ing science

there will be many new types of wall construction without classi-fication.This is inconvenient for fhis new calculation method to be spread.Inthis paper

a new method of wall classification is developed according to theprinciple of fuzzy colony discernment.We have got satisfactory result in com-parison with the result gained by load calculation method.This method invo-lves only algebra calculation and comparison calculation

such as taking bigger

taking smaller etc.

so it is simple and easy for designers to use.