Application of expanded cabo particle in cigarette filter tip

The invention discloses the new function of the expanded tobacco stalk grain during preparing cigarettes, namely adding the expanded tobacco stalk grains into a filter core or shaped cigarette filter papers constituting the cigarette filter and then making the compound cigarette filter. The expanded tobacco stalk grain is made by using the wasted material during preparing the cigarettes, thus has low cost, but good toughness, which, therefore, is favorable for shaping the filter stick and producing cigarettes and will not abrading the equipment. The cigarette filter prepared has better filtering efficiency and adsorbing capacity, which, once applied in cigarettes, can effectively removing the injurious ingredients as tar and nicotine; the tobacco bois generated during burning will not impact the cigarette's sensing quality and also the recovery of the deposed cigarettes during preparing cigarettes.