To improve work for fixing a faucet, and to switch alkaline water and purified water without caring about waterproofness since there is no need to separately provide an operation board for solving such a problem.

In this faucet device for engaging and fixing the faucet with and to a pedestal member by fixing the pedestal member to a faucet installing hole opened in an installing surface by using an installing surface reverse member and a bolt, the installed surface reverse member can be deformed in the radial direction or the chord direction of the faucet installing hole so as to pass through the faucet installing hole, and a water feeding passage member penetrating through the faucet installing hole is arranged in the pedestal member independently of the faucet.