A wireless transceiver device capable of preventing collision includes a first wireless module and a second wireless module. The first wireless module includes a first wireless transceiver unit for transmitting and receiving wireless signals of a first wireless communication system, and an indication signal generating unit for generating an indication signal indicating that the first wireless transceiver unit starts to transmit or receive a wireless signal at a first time point before the first wireless transceiver unit transmits or receives the wireless signal. The second wireless module includes a second wireless transceiver unit for transmitting and receiving wireless signals of a second wireless communication system, and a transmission control unit for controlling the second wireless transceiver unit to stop transmitting or receiving wireless signals from the first time point according to the indication signal.