The rapid development of mobile telecommunication industry has brought great convenience to people's lives, and even progressively have changed our way of life. With the continuous improvement regarding coverage area, internet speed etc. of requirements, there are more and more mobile base stations, and the issue concerning the electromagnetic radiation of mobile base station is also of very high concern by the entire society. Some people often attribute many health problems such as "frequent headache", "mental stress", "poor sleep" to the electromagnetic radiation of the base station. In some areas with fierce reaction, even there were the occurrences regarding the cutoff of feeders, damages to the communication equipment. In order to find out the truth, understand the electromagnetic radiation level of the base station at present, by means of field testing implemented to the existing base stations of a large number of operators, it is to grasp the distributed situation and general rule of the base station's electromagnetic radiation.