Cleaning structure applied to RO (Reverse Osmosis) water maker

The utility model discloses a cleaning structure applied to a reverse osmosis (RO) water maker, which structurally comprises an RO membrane piece and a middle water tank, the RO membrane piece is communicated with the middle water tank, and the water outlet end of the RO membrane piece is converged to the water inlet end of the middle water tank through a concentrated water channel for conveying concentrated water and a fresh water channel for conveying fresh water; wherein the water outlet end of the middle water tank is communicated with the water inlet end of the RO membrane piece through a backflow channel; the discharge capacity of concentrated water and fresh water is monitored, and the discharge capacity of the concentrated water is adjusted according to requirements so as to reach a proper proportion, so that the reverse osmosis membrane can be cleaned in the forward direction, and the reverse osmosis membrane can be circularly cleaned for multiple times by utilizing the backflow channel. 本实用新型公开了一种应用