The invention relates to an adjustable swinging rod type actuator for a travel switch, which comprises a shell, a transmission mechanism, and a push rod, wherein the transmission mechanism comprises a guiding element sleeve, a guiding element, and a rotating shaft with a swinging rod, the guiding element sleeve is fixed on the step shaped inner wall of the shell, the guiding element passes through the guiding element sleeve, one end of the guiding element is mutually hooked with the guiding element sleeve, and the other end of the guiding element is mutually and firmly contacted with the rotating shaft, and the circumferential wall of a shaft section where the rotating shaft and the guiding element are mutually and closely contacted at least comprises a plane; one end of the push rod is mutually fixed with the guiding element, and the other end of the push rod is mutually and firmly contacted with the operation end of the travel switch, and the push rod performs axial reciprocating sliding along with the transmission mechanism. Compared with the prior art, the actuator has the advantages of compact structure, excellent performance, reliable work, and various protection functions.