The invention relates to a polypropylene composition. The polypropylene composition comprises polypropylene and a hybrid processing aid, wherein the molecular weight distribution index Mw/Mn of polypropylene is 2.5-5.5, and the high-molecular tailing index PIHT in the molecular weight distribution width is more than 1.9; the hybrid processing aid comprises oligomer and polyatomic acid, and can be overcoming the defects of high torque and unstable melt index of high-molecular-weight narrow-molecular-weight distribution polypropylene materials. The polypropylene composition is suitable for preparing polypropylene extrusion pipelines, profile materials, sheet materials and casting products.