The invention discloses an acarid-removing sterilizing device and an acarid-removing sterilizing system, and relates to the technical field of acarid-removing sterilizing. The acarid-removing sterilizing device comprises a machine frame, a shaking device, a flapping device, an adsorption device and a sterilizing device body. A shaking frame is fixedly installed at the bottom of the machine frame, and a shaker is installed in the shaking frame; a driving motor is installed on the machine frame and connected with a flapping assembly; both an adsorption draught fan and a collector are installed on the machine frame, one end of a transmission pipe is connected with a suction inlet, and the other end of the transmission pipe is connected with the adsorption draught fan; a sterilizer is installed in an isolation cover. Compared with an acarid-removing machine in the prior art, according to the acarid-removing sterilizing device, as the shaking device, the flapping device, the adsorption device and the sterilizing device body which are sequentially installed on the machine frame are adopted, acarid on household supplies can be completely shaken off, suction acarid removing can be successfully completed, bacteria bred on the household supplies can be killed, the health of the human body is protected, the using effect is good, and the practicability is high.