The utility model relates to a test device of a wireless communication device. The test device comprises a box body, a wave-absorbing material, a receiving antenna, a signal output port, a first coaxial cable, a signal input port, a second coaxial cable and a load. The box body which is sealed is made of an electromagnetic shielding material and is applicable to accommodating a wireless communication device to be tested. The wave-absorbing material is covered on at least partial inner surface of the box body. The receiving antenna arranged in the box body is used for receiving electromagnetic waves radiated by the wireless communications device. The signal output port is arranged at a first outer surface of the box body. The first coaxial cable used for connecting the receiving antenna is connected from the inner surface of the box body to the signal output port. The signal input port is arranged on a second external surface of the box body. The second coaxial cable used for connecting the wireless communication device is connected from the inner surface of the box body to the signal input port. The load of which the impedance is 50 ohms is used for installing the signal input port.