The present invention discloses a flushing toilet cover. The flushing toilet cover comprises a seat, a cover plate and a shell, wherein the rear portion of the seat and the rear portion of the cover plate are hinged to the shell, and a pressure-reduction and flow-stabilization valve, a heating assembly, a switch valve, a flushing assembly and a control panel are mounted in the shell; the pressure-reduction and flow-stabilization valve is provided with a water inlet channel and a water outlet channel, the switch valve is provided with a water inlet and at least one water outlet, the flushing assembly comprises at least one flushing pipe, telescopic flushing spray heads are mounted on the flushing pipes, and water inlets are formed in the flushing pipes; the water inlet channel of the pressure-reduction and flow-stabilization valve communicates with an external water inlet pipe, the water outlet channel of the pressure-reduction and flow-stabilization valve communicates with a water inlet of the heating assembly through a pipeline, a water outlet of the heating assembly communicates with the water inlet of the switch valve, and the water outlets of the switch valve communicate with the water inlets of the flushing pipes; the control panel controls the operating state of the heating assembly, and when the switch valve is in the closed state, the water inlet channel and the water outlet channel of the pressure-reduction and flow-stabilization valve are blocked. The flushing toilet cover of the present invention is quite simple in structure and control and low in cost and can achieve flushing when power failures occur.