The invention relates to the technical field of compound separation and purification and in particular relates to a method for refining fosfomycin phenylethylamine salt through cooling-solvating-out coupling crystallization. The method comprises the following steps: with deionized water as a solvent, dissolving crude salt, then adding ethylene glycol, heating the solution to 40-45 DEG C, then oxidizing with hydrogen peroxide and decolorizing with activated carbon, stirring, heating the mixed solution to 70-75 DEG C, filtering the heated solution, cooling filtrate to 20-30 DEG C for crystallization, filtering, adding acetone into filtrate, carrying out solvating-out crystallization, filtering again, distilling filtrate, and then separating acetone and water to be recycled, wherein the yield of fosfomycin phenylethylamine salt refined product obtained after crystallization for twice reaches up to more than 80%. The method provided by the invention is simple in technology and can be carried out at normal temperature, cryogenic crystallization is not needed, energy consumption is low, the solvent, acetone, and water can be basically completely recycled, and fewer pollutants are discharged.