The incidence of chronic kidney disease (CKD) in cats is approximately 30-50%. Among every 10 cats, 3 to 5 may suffer from CKD. For cats under 13 years old, kidney or ureteral disease is the most common cause of death. The incidence is much higher than in dogs. This invention utilizes a Chinese herbal formula containing ingredients such as Rehmannia glutinosa, Chinese yam, Alisma orientalis, and Poria cocos. It has the effects of warming and tonifying kidney yang, improving urinary problems, and