Abstract: The green and environmental polypropylene (PP) foam material receives extensive interests at home and abroad because of its outstanding physical, chemical and mechanical properties as well as the environmental-friendly feature such as easy reused and decomposed and so on. The development of foaming and molding processes for fabricating PP foam materials and the effect factors of PP foamed effect, physical and mechanical properties are also summarized. The research orientation of the field in the future is also suggested.