The invention relates automotive plateau-type modified fuel methanol and a production method and purposes of the automotive plateau-type modified fuel methanol. The automotive plateau-type modified fuel methanol is composed of methanol-based clean fuel blending additives and automotive fuel methanol. When methanol gasoline blended with the plateau-type modified fuel methanol is used, the increase of octane value is stable, a direct ratio relationship exists between additive amount and the octane value, the combustion stability of the fuel is strengthened, the efficiency of converting chemical energy into kinetic energy is improved, the storage stability is good, and the methanol gasoline is not oxidized and deteriorates after long-time storage. Compared with existing 93# automotive gasoline, the methanol gasoline blended with the plateau-type modified fuel methanol has the advantages of improving power, lowering emission, and reducing environmental pollution when used in plateaus and anoxic areas.