Cavitation prevention slurry pump

The invention discloses a cavitation prevention slurry pump. The cavitation prevention slurry pump comprises a pump body. The pump body is provided with a suck-in opening and a discharge opening. An impeller is arranged in the pump body and provided with main blades and induction blades. The induction blades extend into the suck-in opening. The main blades and the induction blades are connected. The cross section area of the suck-in opening is 3 to 10 times of the cross section area of the discharge opening. The invention aims at providing the slurry pump which can prevent cavitation and can convey high-concentration two-phase flow or high-vapor-content three-phase flow.