Positioning device for insulin injection

The utility model relates to a medical auxiliary instrument, and provides a positioning device for insulin injection, which aims to improve the efficiency of finding an injection position by a patient, and comprises a bottom plate, a plurality of injection hole groups arranged on the bottom plate, a plurality of first label blocks arranged on the bottom plate, a first turntable, a first through hole and a first indicator arranged on the side edge of the first turntable, the second label blocks are arranged on the side edge of the first rotating disc, and the second indicator is arranged on the side edge of the second rotating disc. The rotary drum is rotationally connected with the bottom plate, the first rotary disc and the second rotary disc; one first label block corresponds to one injection hole group, one second label block corresponds to one second through hole, the first through holes are communicated with all injection holes in the injection hole group, and the second through holes are in one-to-one c