A test device suitable for a predetermined wireless communication protocol includes a remote RF test box and a cloud server. The remote RF test box used to control a DUT to transmit or receive an RF signal includes an RF processing unit and a low-level processor. The RF processing unit receives the RF signal from the DUT, and down-converts the RF signal from the DUT into a baseband signal. The low-level processor converts the baseband signal into a digital signal. The cloud server stores an algorithm corresponding to the predetermined wireless communication protocol, communicates with the remote RF test box through a communication interface, receives and decodes the digital signal, and determines whether the DUT meets the predetermined wireless communication protocol through the algorithm of the predetermined wireless communication protocol.