The waste water recovery machine utilizes the screw extrusion principle and the tiny gap between the moving and fixed rings to achieve a new solid-liquid separation device for squeezing and dewatering sludge and feces. The main body of the waste water recovery machine is composed of multiple fixed and moving rings, with a spiral shaft passing through to form a filtering device. The front section is the concentration section, and the rear section is the dewatering section, completing the concentration and squeezing dewatering of sludge in one cylinder, replacing the traditional filter cloth and centrifugal filtering methods with a unique and subtle filter mode. Product advantages: 1. Non-blocking, reduces the amount of flushing water, saves water costs, and reduces the internal circulation burden caused by cleaning water. 2. The electric control cabinet, flocculation mixing tank, and dewatering main body are integrated, reducing the land area required and making installation simple and convenient.