Inflammation caused by glandular secretions stored in cat's anal sac stimulating mucosa when anal gland is inflamed. When the anal gland of a cat is inflamed, the anus will appear inflammatory swelling. Common ones are tail flick, licking and trying to bite the anus. Difficulty defecating, refusing to pat the ass. When the inflammation is serious, the anal sac ruptures, and a large number of dark brown secretions are discharged, accompanied by pus and stench. When the cat has anal gland inflammation, the owner needs to put a collar on the cat to prevent licking the anus from aggravating the condition and take it to the hospital in time.