The invention relates to a garbage inlet switch device, which comprises a main panel, a framework and a sub panel, wherein the upper surface of the framework is provided with the main panel; an upper layer garbage inlet is formed in the upper front end of the main panel; an opening is formed in the front end of the framework; the sub panel is arranged on the lower surface of the framework; a lower layer garbage inlet is formed in the sub panel; a chute is arranged in the framework positioned between the main panel and the sub panel; a shielding element is arranged in the slide groove; a telescopic cylinder is arranged between the main panel and the sub panel arranged in the framework; the front end of the telescopic cylinder is connected with a shielding element; the back end of the telescopic cylinder is fixed on the back end of the framework; in the front end opening position of the framework, pin shafts are arranged at the upper part of the framework positioned at the two sides; a baffle door is connected onto the pin shaft; tension springs are arranged on the two outer side walls of the opening position of the framework; a jacking rod is arranged at the front side of the shielding element. The garbage inlet switch device has the advantages that garbage in a compartment can be prevented from falling out from a dust suction opening; the negative pressure air force during the external connection of dust suction equipment can be increased; the garbage inlet switch device is beneficial for popularization and use.