By analying the mechanism of polymer,s modification with inorganic filler, the resent years, research on polyethylene (PE) modified by various inorganic filler in china and abroad is summarized. With understanding the influence of different filler on composites’ physical and chemical properties, effect of every kind of fillers on polyethylene composites, behavior is generalized and the developing trends of PE,s modified with inorganic fillers are put forward depending on the present situation of the study.