The capability validation of meteorological metrological institutions is discussed from such aspects as the scheme design, reference resources, result evaluation method, big error elimination, and report making in the intercomparison activities of the like laboratories. The intercomparison activities of meteorological metrological laboratories can help establish the social status in professional metrological validation of meteorological metrological institutes, ensure the metrological standards accurate, reliable and consistent, and check the capability of meteorological metrological laboratories, as well as the staff’s technical level and ability to process data; meanwhile, through these activities, participants can found problems, accumulate experiences, identify the differences with peer institutions, and obtain references for continuous improvement and quality management.