By using the GMS-5 data and surface observations of solar radiation of Mohe county and Zhengzhou city, a regression equation is developed between satellite visual light (VIS), infrared 1(IR1), infrared 2(IR2), water vapor (IR3) channel, sun zenith and net surface radiation. The correlation coefficient is up to 0 8259. Especially, in terms of cloud condition, the results are improved when data of IR1 minus IR3 are used, which give a new method to study cloud effect on net surface radiation.