The invention relates to a self-sucking type particle material elevating device and belongs to the technical field of agricultural machines.The device comprises a material discharging hopper located between a front two-stage shelling bin and a rear secondary shelling bin, a centrifugal fan and a vertical elevating pipeline.An air outlet of the centrifugal fan is formed by a gradual contracting section and an arc section.An included angle between the bottom horizontal side and the top inclined side of the gradual contraction section is 10-20 degrees.The arc section stretches into the lower portion of the vertical inlet end of a 90-degree arc bent pipe and extends to the position corresponding to the central angle of 25-30 degrees of the arc bent pipe.The material discharging hopper is provided with a vertical wall which is attached to a vertical inlet and reaches the upper portion of an air outlet.A discharge port is formed in the lower portion of the vertical wall and provided with a hanging curtain.The horizontal outlet end of the arc bent pipe is connected with the lower end of the elevating pipeline.The blowing-out loss is effectively avoided, blowing and elevating under positive pressure air force take the advantage of an opportunity, and the efficiency is improved remarkably.