The ME3030B electromagnetic radiation analyzer and the HF32D electromagnetic radiation analyzer are used to determine the electromagnetic radiation' s data of cellphone when it is put in different conditions. A mountain of statistics have indicated that although the electric field intensity is different when the cellphones are put in different environment or conditions，the radiation levels electromagnetic radiation' s protection，however，the maximal moment electric field intensity is far beyond the reference value GB870288 when the cellphones are in different uses. Also，the electric field intensity reduces very quickly with increasing distance between the analyzer and  the cellphone.