The present invention discloses a low ceramet group automobile brake block, comprising by weight percentage 15-30 of cementing matrix, 25-50 of fortifying fiber, 10-20 of frictional property regulating agent, 5-10 of elastic toughening agent, and 10-30 of filling material. The cementing matrix principally employs a modified sodium aluminosilicate as an inorganic high temperature binder, a little phenol aldehyde resin and rubber as an organic middle/low-temperature auxiliary binder, wherein the weight ratio of the inorganic ceramic binder and the organic binder is 5:1; the fortifying fiber is principally the steel fiber, the copper fiber, mineral fiber and organic fiber are used as the auxiliary fortifying fiber, the weight ratio of the steel fiber and the auxiliary fortifying fiber is 1:1; the frictional property regulating agent principally includes chromic iron, graphite and friction powder; the elastic toughening agent principally includes acrylonitrile butadiene, and organic friction powder; and the filling material is principally petroleum coke and barite. The low ceramet group automobile brake block has a long service life and a superior braking performance, and the preparation method is simple and feasible.