The invention relates to a brake pad, in particular to a friction particle used for a friction material, a preparing method of the friction particle used for the friction material and a high-porositylow-weight drum type brake pad prepared through the friction material. The friction particle used for the friction material is composed of the following raw materials including, by weight, 4-8 parts of acrylonitrile-butadiene rubber latex, 3-6 parts of 1220 resin, 6-10 parts of graphite, 2-4 parts of a secondary high-temperature adhesive, 4-8 parts of calcium sulfate whiskers and 50 parts of padding. Raw materials low in price are commonly adopted, and the raw materials are put into the formula so as to reduce the cost. The physical properties of all the materials of the brake pad are sufficiently utilized, the porosity of the product is increased, the specific gravity of the product is reduced, it is ensured that the performance of the brake pad is stable, braking noise can also be reduced, the braking comfort is improved, the brake pad also conforms to the lightweight development trend, and the production cost can also be reduced.