Sulfonamide production wastewater contains a large amount of sulfonamide, and a large amount of inorganic salts such as sodium nitrate and sodium carbonate. This wastewater discharge is very large, the degree of pollution is very deep and the treatment is difficult. The sulfonamide is recovered by a resin adsorption method, and the recovered sulfonamide reaches the national industrial grade standard. Suzhou Bojie Resin Technology Co., Ltd. provides adsorption resin for the treatment of sulfaguanidine production wastewater, with remarkable environmental benefits. The treatment technology is feasible, simple in operation, low in operating cost, stable in treatment effect, and suitable for promotion.