A bathtub faucet water switching structure includes: a hollow water passage body with a water inlet and a water outlet; a switching lever longitudinally installed at the front of the water passage body and having an upper end protruded from the faucet body and a lower end linked with the center bolt; and a center bolt movably installed to the water outlet and having first and second shaft portions, and a water stop plate installed between the first and second shaft portions. The first shaft portion is corresponsive to the lower end of switching lever, and a spring is sheathed on the second shaft portion, and the center bolt is moved horizontally back and forth in the water passage body by the action of the switching lever and spring to drive the water stop plate and water outlet hole to connect or disconnect a water path.