The detective rate of sulfonamide was 7.41%, sulfadiazine 4.44%, trimethoprim 12.59% and sulfamethozazole 21.48%. [Conclusion] Sulfa remains of beast drugs in fresh milk is a serious problem.

• 结果鲜(生)乳中磺胺的残留检出率为741%25,磺胺嘧啶为444%25,甲氧苄基嘧啶为1259%25,磺胺甲恶唑为2148%25。