The invention discloses an auxiliary loading device of a wafer, and belongs to the technical field of sample loading and unloading devices. The loading device comprises a lifting mechanism, a wafer platform, at least two movement shafts, a limiting plate, two limiting guide rails and a bottom plate. The loading device can achieve up-and-down movement and horizontal movement of the wafer platform by virtue of mutual matching between the lifting mechanism and the movement shafts, the limiting plate, the two limiting guide rails and the bottom plate, so that taking and placing of a wafer sample are facilitated, loading of the wafer sample is assisted, and a manual loading process with a limited interaction space is safe and stable.