To provide a radio setting device that performs setting of radio communication to a radio communication device without requiring manual operation having temporal restriction and input means other than a radio communication function.

A radio setting device according to the invention includes: setting program storage means for storing a setting program for radio slave units receiving and performing the setting program to set parameters of radio communication in a prescribed procedure; connection detection means for detecting initial connection from any of the plurality of radio slave units to a radio communication device; and setting program transmission means for transmitting the setting program to a radio slave unit from which the initial connection has been detected via the radio communication device.