Abstract: A pressure-type liquid rapid heater includes a heating element shell, an upper cover, an inlet tube, an outlet tube, a heating tube and a lower cover, wherein the heating tube is a coated electrothermal glass tube and mounted in the heating element shell; a pre-heating tube is mounted on an outer wall of the heating element shell; the upper cover and a first inner cover are successively connected with an upper end of the heating element shell; upper ends of the heating tube and the pre-heating tube are fixed through a first silica gel sealing ring; a second inner cover and the lower cover are successively connected with a lower end of the heating element shell; lower ends of the heating tube and the pre-heating tube are fixed through a second silica gel sealing ring the inlet tube and the outlet tube are both connected to the upper cover.