In this paper, two different methods were used to prepare the blend of LDPE and EVA. One of them was mechanical blending, and the other was solution blending. The relationship between sol fraction and radiation dose of different weight ratio polymer blends has been studied. The experiment results show that the relationship,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42649130&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42649145&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42649131&type=,is also suitable to this polymer blend system. The method to calculate the β value of polymer blend system (EVA/LDPE) has been established.