Waterproof and oil-proof air pressure sensor and electronic cigarette

The invention discloses a waterproof and oil-proof air pressure sensor and an electronic cigarette. The waterproof and oil-proof air pressure sensor comprises a circuit board with a vent hole, an air pressure sensing element installed on the circuit board, a chip for processing air pressure data and a shell installed on the circuit board and covering the air pressure sensing element and the chip, wherein the vent hole is located below the air pressure sensing element; particularly, an air inlet hole is formed in the shell, and the air inlet hole and the air pressure sensing element are relatively staggered in position. The positions of the air pressure sensing element and the air inlet holes in the shell are relatively staggered, so an L-shaped air channel structure is ingeniously formed, and the condition that the air pressure sensing element is eroded by external liquid is improved; the number of the air inlet hole is only one, the hole diameter is small, and the probability that liquid and tobacco tar inva