Two-stage reverse osmosis device with good flushing effect

The utility model relates to the technical field of water treatment, and discloses a two-stage reverse osmosis device with a good flushing effect, which comprises a base, the top of the base is fixedly connected with a treatment box, the top of the treatment box is opened, a mounting shell is arranged on the inner side of the treatment box, a cleaning structure is arranged above the treatment box, and the cleaning structure is arranged on the inner side of the mounting shell. A dismounting structure is arranged between the mounting shell and the treatment box and comprises an extension plate, the extension plate is fixedly connected to the outer side of the mounting shell, and a permeation net is fixedly connected to the inner side of the mounting shell. By pulling the clamping blocks on the two sides, the clamping blocks slide in the sliding grooves through the sliding blocks B, the sliding blocks B extrude the springs, inserting grooves formed in the clamping blocks are separated from or abut against the in