The invention relates to the technical field of semiconductor processing, in particular to an auxiliary turntable mechanism for sorting semiconductors, which improves the visual detection effect of the semiconductors, improves the visual detection efficiency of the semiconductors and improves the practicability. Comprising an equipment box, rotating disc mechanisms, a detection mechanism, a clamping mechanism and a moving mechanism, the two rotating disc mechanisms are installed on the equipment box, a cavity is formed in the equipment box, a control device is arranged in the cavity, the detection mechanism is installed on the equipment box, the moving mechanism is installed on the equipment box, and the clamping mechanism is installed on the moving mechanism. The moving mechanism is used for moving the clamping mechanism; the rotary disc mechanism comprises a first speed reducer, a first motor, a rotary disc and clamps, the first speed reducer is installed on the equipment box, the first motor is installed on the first speed reducer, the output end of the first motor is connected with the input end of the first speed reducer, the rotary disc is installed at the output end of the first speed reducer, and the clamps are evenly installed on the rotary disc.