Precipitation is an important process in the global energy / water cycle. This paper focuses on the analysis of the precipitation detection capability of FengYun-3 meteorological satellite, and looks forward to the development prospect of precipitation detection technology in the follow-up planning of Fengyun satellites. The analysis shows that the precipitation detection system of FY-3 meteorological satellite, which is composed of FY-3 precipitation satellite as the main star and other FY-3 polar orbiting satellites, is superior to the current second-generation Precipitation Measurement Satellite GPM program in terms of load type, quantity and channel setting. The FY-3 precipitation satellite is designed to be loaded with Ka / Ku dual frequency precipitation radar. The satellite orbit design covers the middle and low latitudes within 50 degrees of North-South latitude. It has three-dimensional detection ability for the structure of strong convective weather systems such as typhoon and rainstorm affecting China. The precipitation detection capability of FY-3 meteorological satellite provides basic support for meteorological disaster prevention and reduction.