This is a urinary system disease in which salts in urine form condensations in the kidneys and bladder to stimulate and damage the urinary tract mucosa, causing urinary tract obstruction. Clinically, it is characterized by difficulty in urinating, pain in the blocked area, and blood in the urine, causing the cat to be frightened, have abnormal posture, severe pain, and frequent urination. The symptoms vary depending on the location of the stone. ​​​​​​

Kidney stones mainly cause hematuria and pain in the kidney area; ureteral stones have symptoms of acute severe pain, vomiting, and anuria; bladder stones cause symptoms of frequent urination, difficulty urinating, anuria, and painful restlessness; urethral stones have symptoms Sick cats constantly make urinating postures, have difficulty urinating, have poor or dripping urine discharge, often feel pain, have a full bladder and increase their abdominal girth, and other symptoms. The disease is mainly caused by the quality of feed and drinking water. For example, long-term feeding of feed containing too much calcium, phosphorus and other mineral salts and insufficient drinking water.

In addition, endocrine disorders or disorders of urinary system and renal function are also causes of the disease. The components of feline urinary stones are mostly phosphates, in addition to cystine, oxalate, urate and carbonate.

Prevention and control methods can improve the feed formula and provide sufficient clean drinking water. Treatment mainly focuses on removal of stones, feeding, removal of stones, and removal of stones, with symptomatic treatment being the main focus. For phosphate stones, chlorine can be taken to alkalinize the urine to promote the dissolution of the stones. For cases of incomplete obstruction, urine can be taken and plenty of drinking water can be used to flush the urethra to remove stones.