The invention discloses a rubbish filtering device for a water project. The rubbish filtering device comprises a first hood body and a second hood body, wherein the first hood body is horizontally placed, and the second hood body is vertically placed; the cross section of the first hood body adopts a C shape; the cross section of the second hood body is circular; a first rotating shaft is arrangedin the first hood body, and a second rotating shaft is arranged in the second hood body; first spiral blades are fixed to the first rotating shaft in a winding manner, and second spiral blades are fixed to the second rotating shaft in the winding manner; the first rotating shaft is connected with a first driving motor through a transmission piece; one end of the first rotating shaft is connectedwith the lower end of a first vertical plate, and the other end of the first rotating shaft is connected with the second hood body; a discharging opening is formed in the upper end of the second hoodbody, and is connected with a rubbish collecting box through an oblique plate; and in the flowing process of river water, rubbish floating on the river surface is intercepted and collected through thefirst hood body so that the rubbish is regularly cleaned. The rubbish filtering device disclosed by the invention is quick, convenient, time-saving and labor-saving; the environmental pollution is reduced; and the situation that a sluice is failed caused by that too much rubbish is gathered and flow in the sluice is avoided.