Abstrcat The main effects on the grafting of vinyl silane onto PE and the cross-linking of silane grafted PE have been studied on the basis of the principles of the grafting of vinyl silane onto PE, the cross-linking of silane grafted PE and the processing technique. The resolutions of these main effects, the most optimum content and the most suitable processing technique have been given out, such as the choice of raw materials, the choice of various additives and their optimum content, the choice of grafting and cross-linking technique and the choice of the grafting machinery. At the same time, some suggestions and previewing on the development of this technology have also been presented.