A wireless adaptor is proposed to make at least a wired device able to be used in a wireless manner. It can be used together with a wireless transmitting/receiving device. The wireless adaptor includes at least a connecting port for connecting with a wired device and receiving signals sent therefrom; an adaptive transmitting/receiving unit for converting the signals sent from the wired device into transmission signals. Therein the transmission signals will be passed to a wireless transmitting/receiving module and converted into radio signals thereby. Furthermore, the wireless transmitting/receiving module can also convert the radio signals emitted from the wireless transmitting/receiving device to transmission signals and pass them to the adaptive transmitting/receiving unit. Subsequently, the adaptive transmitting/receiving unit converts the transmission signals to command signals for the wired device to perform.