The invention relates to a cleaning treatment device for metal pickup parts of stethoscopes. The cleaning treatment device comprises an I-shaped frame, a chute, a wiping device, a supporting base plate, a turnover device, a fixing device and a cleaning device. According to the cleaning treatment device, when electric push rods are pushed forwards, movable plates can be driven to slide on long plates, and the pickup parts of the stethoscopes in inner cavities of clamping frames can be tightly held; the pickup parts of the stethoscopes can be turned over quickly by rotating a worm clockwise; sliding sector plates are pulled forwards, lifting limiting plates are synchronously driven to move forwards when the sliding sector plates move, then the pickup parts are prevented from moving upwards due to friction force during cleaning; and through contraction of hydraulic rods, when the hydraulic rods retract, connecting blocks are driven to ascend, so that the pickup parts with different scales can ascend before being turned over.