β form polypropylene (β-PP)has been a hot topic in modification-PP because of its excellent mechanical properties

forming microhole in drawing and other special properties. This paper reviewsthe development advances in β-PP in recent years. It simply describes four methods of making β-PP

focus on the way of β nucleating agent inducing β form in PP; the history

sorts

efficiency and nucleating mechanism of β nucleating agent; different supermolecular structures of β-PP: β-spherulite

hedrite

β-Transcrystallinity

β-cylindrite; β→α phase transformation and mechanism; the effect of temperature

shearing

annealing

hot history and processing condition on the β-PP

It provide information for producing high content β form polypropylene. Trends in research of nucleating agents are also presented.