Urolithiasis is a general term for urolithiasis in various parts of the urinary system, and it is a common disease in the urinary system, such as kidney calculi's disease, ureteral calculi, bladder calculi and urethral calculi. The main clinical manifestations are dysuria, dripping urine, anuria, bladder distension, abdominal pain and other symptoms. The disease is caused by insufficient drinking water, a lot of perspiration, and a lot of concentrated feed and root material rich in phosphorus. Prevention and treatment methods: ① Give sufficient and clean drinking water; (2) adding ammonia chloride to feed to delay the deposition of phosphorus and magnesium salts; ③ The feed calcium-phosphorus ratio is 2:1; ④ Use diuretic urotropine or Keniaozhai to help remove stones; ⑤ Use penicillin and streptomycin to prevent urinary tract infection, or use Chinese herbal medicine to remove stones. ⑥ Severe cases need surgical treatment.