Abstract: It is the mainly method to do climate prediction that using the dynamical climate model products (T63) to at present and in the future.The operational system-climate model interpretation system in Chengdu Regional Meteorology Center has been established basing on the model products distributed by national climate center of China, the data of geopotential height on 500hPa provided by NCEP/NCAR, climate data of the 84 representative stations in southwest China and the statistical dynamic method.The purpose of this system is to use the downscaling method to perform the climate prediction in southwest China, and this make the combination of statistical method and the dynamical method in usual operation.This system has good performance on predict the monthly precipitation and temperature indicated by the test results of two years hindcast and one year operation, and has becoming main reference factor in usual operation at Southwest Climate Center in China.The performances and technological methods about the system were introduced in this paper.