Abstract:From January to June,2011,the Ji'nan new generation weather radar occured the antenna pitching localizations drifting,the pitching angle code flashing,exceed pre-pitch limit and the dead zone limit,the antenna/transmitter power ratio goes bad and so on warnings irregularly,caused the radar can not operate normally.This breakdown characteristic is appears repeatedly, resulting downtime 22 days time,lasted 127 hours.In this paper,we analyzed the causes of this difficult process and maintenance,proposed the responses and the solution,designed to provide technical support for the radar site repair and maintenance experience,to achieve rapid troubleshooting purposes.