Abstract: With the social progress and the development of communication technology,the number of mobile communication base stations have continually increased in cities.Furthermore,the influence of their electromagnetic radiation on the surrounding environment has attracted  people's greater attention.In order to standardize the construction of the base station,and eliminate public's panic,the author studies the prediction of the safety distance of GSM900 mobile communication base station by theoretical and field measurement,the horizontal safety distance being 26 meters,while the vertical being 6 meters.

Key words: mobile communication base station, electromagnetic radiation, safety distance