Abstract:Abstract: Through statistics、analysis、comparisons, comprehensively summarizing the L-band sounding radar system professional operations of Xichang station in Sichuan province in recent years, this article can get the conclusions: The L-band sounding radar system has stable property, runs stably, and has remarkable benefit. It is very important for each preparatory work of L-band sounding radar system before releasing balloon. Radar routine maintenance is the precondition of sounding smooth. It is a reference for sounding servicers and administrative personnel with common breakdown analysis, breakdown elimination method, and response in strong convection weather in this article mention.