Waterproof fingerprint module

A waterproof fingerprint module disclosed by the present invention comprises a sealing ring, a chip and a shell, the left side and the right side of the shell are provided with a first protrusion and a second protrusion, the chip is of a convex structure, the sealing ring is provided with a second groove, and the second groove is internally provided with a first positioning protrusion and a second positioning protrusion. A third positioning bulge is arranged between the first positioning bulge and the second positioning bulge; the upper end of the third positioning protrusion is provided with a key, the upper end of the key is provided with a substrate, the key is used for supporting the substrate, the substrate comprises a first substrate, a second substrate and a third substrate, and the first substrate, the second substrate and the third substrate are sequentially connected end to end to form a structure with an open left end and a closed right end. The two ends of the chip are cut through CNC to form the