A flush toilet for prevention of reverse flow and uses a reduced number of parts. The flush toilet includes a toilet body having a bowl, a rim water outlet, a jet water outlet, and a discharge water trap piping; a water storage tank. A flush water supply mechanism is provided for supplying flush water to the rim water outlet and the water storage tank and a pressurizing pump pressurizes the flush water in the water storage tank. A jet-side water supply path supplies the pressurized flush water to the jet water outlet. An overflow path is provided having a lower end connected to the downstream side of the highest position of the jet-side water supply path and an upper end opened in the upper part in the water storage tank with a flapper valve provided in the overflow path.