The present invention discloses a wireless tag writing device and method, a readable storage medium, and an electronic device, which can perform correction work in a short time regardless of the setting interval of an RFID tag in which information is written, the wireless tag writing device comprising a setting unit, a correction unit, and a writing unit. A correction execution unit, which is a correction unit, uses a conveyance pitch setting unit, which is a setting unit, to convey label paper on the basis of a conveyance pitch set on the basis of information including the arrangement state of a plurality of pieces of label paper adhered to the label paper. And specifies a position at which information is written to an RFID tag that is a wireless tag, a wireless output value at the time of writing information, and a threshold value for determining, for the wireless output value, a response signal from the RFID tag to be written and a response signal from an RFID tag that is not to bewritten. An information writing unit, which is a writing unit, writes information to the wireless output value specified by the correction execution unit for the writing position specified by the correction execution unit.