Splash-proof logic switch

The utility model relates to the technical field of logic switches, in particular to a splash-proof logic switch, which comprises a rotating shaft, a terminal, a base and a top cover. An accommodating cavity is formed between the base and the top cover; the rotating shaft penetrates through the top cover and is rotationally arranged in the accommodating cavity; a conducting ring is arranged at the bottom of the rotating shaft; the conducting ring is provided with an avoiding hole; a contact piece is arranged at the bottom of the accommodating cavity; the terminal penetrates through the base and is electrically connected with the contact piece; the top of the base protrudes upwards to form a waterproof fence. The bottom of the top cover is recessed inwards to form a waterproof pit. And the waterproof fence is connected with the waterproof pit. According to the logic switch, the waterproof fence is arranged at the top of the base, and the waterproof pit is arranged at the bottom of the top cover, so that an ext