A multi-command trigger switch includes a rotary switch, a rotary casing and a trigger element. The rotary switch includes a base and a rotary disc coupled with the base and movable on a swivel locus against the base. The base and the rotary disc are interposed by a housing space to hold a rotary trigger assembly and a depressing trigger assembly. The rotary trigger assembly outputs a first trigger signal while moving on the swivel locus. The depressing trigger assembly outputs a second trigger signal while moving on a vertical locus. The rotary casing and the rotary switch define a movement space therebetween to hold the trigger element. The base and the depressing trigger assembly confine movement of the depressing trigger assembly through a positioning notch and a confining rib. The depressing trigger assembly and the trigger element include confine the trigger element from rotating against the rotary casing.