The invention discloses an excrement sludge treatment system. The excrement sludge treatment system comprises a septic tank, a flocculation box, a material storage box and a dewatering machine, wherein the top part of the flocculation box is provided with a first material inlet; one side of the first material inlet is provided with an agent feeding port; one side of the flocculation box is provided with a material outlet; the material outlet is connected with the material storage box; an aeration assembly is arranged in the flocculation box; the dewatering machine comprises a box body, an extruding device and a material receiving device, the extruding device is arranged in the box body, and the material receiving device is arranged under the extruding device; the top part of the box body is provided with a second material inlet; the bottom part of the box body is provided with a water storage cavity; one side of the water storage cavity is provided with a water outlet; the aeration assembly comprises an aeration head; a unidirectional flowing assembly is arranged in the aeration head; a push-assisting device is arranged at one side of the flocculation box. The excrement sludge treatment system has the advantages that the flocculation effect of the sludge is improved by the aeration assembly, so that the sludge can reach better flocculation function; the deposited sludge at thebottom part of the flocculation box is effectively discharged out via the bottom part of the flocculation box through the push-assisting device, so that the treatment efficiency of the sludge is improved.