The utility model provides a water -proof type metal button switch. The problem of current metal button switch waterproof performance poor is solved. It include the base and with the shell of base looks adaptation, the shell on be equipped with the pressing piece, the base on be equipped with the terminal, all be equipped with the static contact on every terminal, the base on be equipped with the movable contact spring, the pressing piece be connected with the movable contact spring through the driving medium and drive the movable contact spring and be close to the static contact, furthermore, waterproof locate between pressing piece and the driving medium of elasticity. The beneficial effects of the utility model are that, it is waterproof to have set up elasticity, surrounds the part in the base in waterproof of elasticity and base, carries out water proof to electricity unit such as movable contact spring, stationary contacts, avoids the water logging to leak performance and the life who gets into electricity unit and influence the product, and waterproof of elasticity has certain elasticity for it is reliable quick to reset after the pressing piece action, avoid work in the card extremely arouse equipment trouble.