A switch box mounting structure which allows easy removal of the switch box from the panel, reduces the length of the wires, improves the work efficiency, prevents the wires from being broken, and reduces the material cost. The switch box mounting structure includes a connector holder (43) having a pair of shaft receiving grooves (59) which are fixedly engaged with a mounting hole of a panel, a connector (45) including a housing having shafts (69) protruded therefrom, and a switch box (48). The connector is coupled to the connector holder (43) with the shafts (69) engaged with the shaft receiving grooves (59) in such a manner that the connector (45) is rotatable about the shafts (69). The switch box (48) is inserted into the connector holder (43) to engage with the connector (45), and has a pair of locking pawls (77) which are locked to the mounting hole (79). The locking pawls (77) protrude from opposite sides of the switch box which face in directions perpendicular to the shafts (69). It is preferable that the switch box mounting structure further include leaf springs (67) which are provided between the connector holder (43) and the connector (45) for urging the connector (45) to a neutral position at which the terminals are perpendicular to the panel (41).