An electromagnetic relay (EMR) is widely used in automatic control field, and its dynamic characteristics play a significant role in EMR researches. According to structural features of the EMR, a dynamic characteristics testing and analyzing system (DCTAS) based on CCD digital image processing technique is designed and implemented. By using the DCTAS, the dynamic characteristics (include displacement, velocity, acceleration and force characteristics) of EMR whose operating time is less than 12ms and armature travel is less than 10mm can be investigated. The comparison of testing data obtained by the DCTAS and that of by a high speed camera indicates the validity of the system to EMR dynamic characteristics testing.