HX activated bleaching earth is made of magnesium cal-bentonite, it was refined after acidification. It has larger hole area with strong absorption property and catalyze ability. It has been widely used to decolor and refine of the animal oil and fat, plant slipid and cosmetic raw material, petroleum industry, chemical industry for daily use, it has also been used in sewage disposal, filter noxious gas and catalyze petroleum in grain.