A vane type melt pulsating pumping device was developed based on the principle that the periodic change of transport space volume produces pulsating elongation stress. The pulsating elongation- compression stress was applied to polypropylene/glass fiber melt to achieve sheet reinforcement extrusion. The effects of the rotating speed of the pulsating pump shaft on the microstructure and macroscopic mechanical properties of sheet were investigated experimentally. The results show that the pulsating pumping device can promote the dispersion and orientation of glass fiber along the extrusion direction. The tensile strength of glass fiber along the extrusion direction increases first and then decreases with the increase of rotating speed, and reaches the maximum value of 42.64 MPa at the pumping speed of 30 r/min, which is 37.9% higher than that of the directly extruded sheet (30.92 MPa). The results show that the vane type melt pulsating pumping device is suitable for glass fiber(GF) filler reinforced polypropylene(PP) system, and provides an effective way for PP/GF strengthening.