The invention relates to a drum type brake lining friction material and a drum type brake lining preparation method, and belongs to the technical field of vehicles, wherein the drum type brake lining friction material comprises, by weight, 10-15% of a phenolic resin, 6-12% of glass fibers, 10-15% of petroleum coke, 10-20% of mineral fibers, 10-50% of barium sulfate, 3-8% of alumina, 5-10% of artificial graphite, 5-10% of friction powder, and 3-5% of nitrile butadiene rubber powder, and raw material mixing matching according to the ratio, hot pressing molding, heat treatment, grinding drilling and printing packaging are performed to prepare the drum type brake lining finished product. According to the present invention, based on the disadvantages in the prior art, the components in the brake lining friction material are improved, such that the hardness can be correspondingly reduced while the porosity of the brake lining is increased, and the service life of the brake lining is prolonged.