Radiation crosslinking of the multiple-phase system for PDMVS and EVA have been studied. The results obtained from the optical microscope and the mechanical properties show that the proless of phase-turnover ocuured between ,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648275&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648277&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648276&type=, and ,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648278&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648280&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648279&type=, PDMVS-to-EVA ratio. PDMVS acts as sensitizer of the radiation crosslinking of EVA. The radiation dose of gelation for the multiple-phase system increased with the reduce of PDMVS content. In the neighbourhood of turnover point,G, value of radiation crosslinking has a minimium. The crystallinity and crystal melting point decreased with the increasing of dose in the process of radiation crosslinking. Radiation-crosslinked multiple-phase system have good heat-Shrinkage properities.