Waterproof motor

A waterproof motor comprises: a base having a recess and a shaft tube standing upright on one side of the base; a waterproof cover covering the one side of the base, the waterproof cover having a through hole correspondingly enclosing the shaft tube and a protruding portion correspondingly interlocking with the recess, a first space forming between the waterproof cover and one side of the base; a first circuit board disposed inside the first space and having a plurality of sensors; a covering body having an opening and coupling to the other side of the base; an insulation plate covering the opening of the covering body, a second space, opposite to the first space, being formed between the insulation plate and the covering body; a second circuit board disposed in the second space; and a plurality of airtight rings including first to third airtight rings which are respectively disposed between the waterproof cover and the one side of the base, between the waterproof cover and the shaft tube, and between the cov