The invention relates to a metallic matrix spindle brake pad for a wind driven generator and a preparation method thereof. The material comprises iron powder, copper powder, tin powder, sulphur, shortcut steel fiber, copper fiber, high alumina ceramic fiber, inorganic oxide, graphite, etc. The preparation method comprises: weighing the components of the material according to the formulation, stirring and mixing the components in a special dry-type mixer, and ensuring the fibers to be fully dispersed and even; pressing the mixture for molding at the normal temperature, then sintering at the certain pressure and temperature, and cooling along with a furnace; finally, machining to obtain the metallic matrix spindle brake pad. Compared with the common powder metallurgy brake pad, the frictionmaterial prepared by the method is added with metals and the ceramic fiber, so as to remarkably improve the mechanical properties of the material and the static friction torque; meanwhile, the product has the advantages of moderate and stable coefficient of dynamic friction, better wear resistance, low brake noise and less dual wear, can completely meet the requirement of the wind driven generator for high speed brake of a spindle, and realizes environmental protection in deed.