The embodiment of the invention discloses a pairing method, apparatus and device of a wireless scanning gun, and a storage medium. The method comprises the following steps: when a first external control instruction is received, setting a first channel frequency band of a receiver data transmission channel to be the same as a second channel frequency band of a data transmission channel of the wireless scanning gun; receiving a pairing detection signal sent by the wireless scanning gun, and generating a feedback signal according to the pairing detection signal, wherein the sending frequency of the pairing detection signal is within the range of the first channel frequency band and/or within the range of the second channel frequency band; and pairing the wireless scanning gun with the receiver according to the feedback signal. The dependence on a setting code in the pairing process of the wireless scanning gun is eliminated, and the pairing process is convenient and fast.