The invention provides a method for cleaning a solar radiation sensor, and the method comprises the step of cleaning the surface of the solar radiation sensor by three processes of blowing, brushing and wiping, wherein blowing means using compressed air to blow the surface of the solar radiation sensor, brushing means brushing the surface of the solar radiation sensor with a hair brush, and wipingmeans wiping the surface of the solar radiation sensor with suede. The invention has good cleaning effect by three cleaning processes of brushing, blowing and wiping the surface of the solar radiation sensor. The method provided by the invention does not need to clean the solar radiation sensor manually, has less cleaning effect less affected by human factors, high cleaning efficiency and greatlyreduced intensity and workload of the work industry, and is especially suitable for national weather stations and national scientific observation and research stations in harsh environments, such asmeteorological stations and observation research stations in desert areas and high and cold mountainous areas. The solar radiation sensor is cleaned with an innovative method without the need for water, which can save a lot of water resources and is good for environmental protection.