Stretching orientation and strain-induced crystallization of rubber is widely recognized to play key role in the self-reinforcement of natural rubber and some synthetic rubbers (such as chloroprene rubber

butyl rubber and hydrogenated nitrile-butadiene rubber).Therefore

studying these phenomena and behavior has substantial significance for understanding the mechanism of the rubber reinforcing.In this review

various characterization methods concerning stretching orientation and strain-induced crystallization of polymer materials as well as principles

features and applicable scope of these methods were summarized and compared.Current progresses in the research about stretching orientation and strain-induced crystallization of nano-fillers (including carbon black

silica

nano clay and carbon nanotube) reinforced rubber composites as well as thermoplastic elastomers were surveyed.Finally

the future developing trend in this research field was prospected.