The invention relates to a sludge treatment device, in particular to a sludge treatment device for a water conservancy project. The sludge treatment device for the water conservancy project not only can dewater sludge, but also can compress the sludge into a fixed shape. In order to solve the technical problem, the sludge treatment device for the water conservancy project comprises a bottom plate, a mounting frame, supporting rods, a collecting frame, a treatment frame, a pressing plate, a lifting mechanism and the like, wherein the supporting rods are bilaterally symmetrically arranged in the middle of the top of the bottom plate, the top ends of the supporting rods are connected with the treatment frame, the mounting frame is arranged at the left end of the top of the bottom plate, the lifting mechanism is mounted on the upper portion o the right side of the mounting frame, the bottom of the lifting mechanism is connected with the pressing plate, and the pressing plate is matched with the treatment frame. The sludge is led into the treatment frame, sewage in the sludge is squeezed out by matching the pressing plate with the treatment frame, and the squeezed sewage is discharged into a sewage treatment tank.