NOVELTY - A copper base powder smelting brake plate material comprises 10-20 wt.% of copper, 30-40 wt.% of FWCuZn30 brass, 10-16 wt.% of graphite, 8-14 wt.% of sea sand, 5-8 wt.% of silicon carbide, 5-10 wt.% of ferrochrome and 1-3 wt.% of tin.    USE - Copper base powder smelting brake plate material used as high speed axial brake material for sea base wind power generation unit.    ADVANTAGE - The copper base powder smelting brake plate material has excellent corrosion resistance performance, high friction coefficient, high brake moment and good stability of friction coefficient.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of copper base powder smelting brake plate material involving dosing by weighing according to component ratio of brake plate material, uniformly mixing components, doping zinc stearate and aviation kerosene and uniformly mixing in which zinc stearate takes up 0.2-0.8% of total weight of components and aviation kerosene takes up 0.5-1% of total weight of components; compaction by performing mold compaction of mixture under 350-600 MPa to obtain compacted blank; making support steel back by number 45 steel plate according to size of compacted blank and electrically plating copper as thick as 10-20 mu m on surface of support steel back; pressurization and sintering in sections by placing compacted blank on support steel back, horizontally placing support steel back on graphite board, performing pressurization and sintering and cooling with furnace in which pressurization and sintering involves carrying out hydrogen protection, controlling furnace pressure to 1-2 MPa, heating to 380-420 degrees C according to heating speed of 3-8 degrees C, regulating furnace pressure to 2-3 MPa, continuously heating to 800-870 degrees C and keeping for 2-3 hours; and mechanical processing and forming by performing mechanical strength and friction wearing performance detection for sintered blank and mechanically processing until required produce size is reached to obtain copper base powder smelting brake plate material.