Water-saving water purifier

The invention discloses a water-saving water purifier and relates to the technical field of water purifiers. The water-saving water purifier comprises a box body, a box cover, a circuit board, integrated PP cotton, integrated granular active carbon, integrated compressed carbon, a RO membrane component, post-active carbon, a bracket, a water-in solenoid valve and a low-pressure switch, wherein the box cover is arranged at the upper part of the box body; the integrated granular active carbon is arranged at the upper and lower ends of the integrated compressed carbon; one end of the integrated granular active carbon is connected with the integrated PP cotton; the RO membrane component and the post-active carbon are both arranged in the box body through the bracket; the water-in solenoid valve, the circuit board and the low-pressure switch are all arranged in the box body. The water-saving water purifier also comprises a self-priming pump, a water storage tank, a water level controller and a two-in-one solenoid