Abstract: With the research and development of Chinese Doppler weather radar system, it has long become an important detection tool for Chinese weather forecast. Since the Doppler weather radar has been in use for a long time, due to the influence of the environment and the equipment itself, the occurrence of its failure has also attracted people’s attention. In order to reduce the failure rate,the daily maintenance of equipment has become the focus. This article focuses on the basic content of daily maintenance and common fault maintenance.