The invention relates to a method for treating a glyphosate mother solution by using an oxidization method, comprising the following steps of: regulating the PH value of the glyphosate mother solution containing organophosphorus or glyphosate or the glyphosate mother solution containing nitrogen-containing compounds or salts to 0.1-14, slowly dropwise adding hydrogen peroxide, raising temperature and then introducing strong-oxidization gas, wherein the reaction temperature is 0-100 DEG C, and the molar ratio of the added hydrogen peroxide to the strong-oxidization gas is 1:0.1-20; and carrying out oxidization reaction at normal pressure or under the condition of pressurization, oxidizing nitrogen-containing impurities, such as glyphosate, glyphosine, phosphorous acid, methyl glyphosate, aminomethyl phosphoric acid, N-(phosphonomethyl) iminodiacetic acid and the like, into phosphate radical irons, oxidizing nitrogen-containing organic impurities, such as glycine, triethyl ammonia, diethanol amine, aminomethyl phosphoric acid, ethoxyl glycine and the like, into ammonium radical ions, and then concentrating and separating to obtain a phosphate and amine salt inorganic compound for recycling. The invention can effectively oxidize the complex organophosphorus and the nitrogen-containing compounds in the glyphosate mother solution into a single phosphate radical and amine salt inorganic compound for convenient separation and recycling and simultaneously reduces the environmental pollution and the soil hardening of the mother solution; the total conversion rate of phosphorus-containing compounds reaches 60%-90%, the conversion rate of the nitrogen-containing compounds reaches above 90%, and the removing rate of the glyphosate reaches 95%-99% so that a great deal of generated phosphate and amine salt can be used for agricultural fertilizers, thereby achieving the purpose of turning wastes into valuable.