The invention relates to a methanol gasoline core agent mutterlauge, which includes the following components: hexamethyl phosphoramide, isopropyl ether, toluene or xylene, hexahydrophenol, cerium nitrate; naphthenate iron, silicon aluminum phosphate or monobasic sodium phosphate, methyl methacrylate, aether, tert-butyl methyl ether; tert-butyl alcohol, detergent, dimethyl ketone, initiator C, isobutanol; carbon 5, ferrocene; methanol, antioxidant and normal octane. The core agent can be obtained by mixing the methanol gasoline core agent mutterlauge and methanol evenly; additive can be obtained by mixing the core agent with methanol evenly; methanol gasoline can be obtained by mixing the additive with GB gasoline or constituent oil or naphtha evenly. The methanol gasoline prepared by the methanol gasoline core agent mutterlauge provided by the invention has excellent economical efficiency, environment protecting performance, and safety; can be stored for long time; and has the advantages that the storage time is long, the process is simple, normal temperature and normal pressure are enough, the operation is convenient, the core agent mutterlauge reacts with the methanol fully, andvarious high-gauge number methanol gasoline products can be prepared according to requirements.