Cystitis is a common disease in the urinary system. mostly caused by urinary tract infection. When acute cystitis is not completely cured, it is easy to form chronic cystitis. Let's understand the diseases of chronic cystitis in following. Chronic cystitis refers to a secondary inflammation. The most typical symptoms are frequent urination, urgency, dysuria, and even urinary incontinence. There may be hematuria and pyuria. For the diagnosis of chronic cystitis, a comprehensive genitourinary system examination should be conducted in detail to determine whether there is chronic kidney infection. Male patients need to exclude penile head dermatitis and prostate seminal vesiculitis; female patients should exclude urethritis, urethral diverticulum, and bladder swelling, vaginitis and urethral opening of the hymen umbrella or fusion. Chronic cystitis may be a rare complication due to the proliferation of the lamina propria of the bladder mucosa and the extensive fibrous tissue of the muscular layer, resulting in decreased bladder capacity and inflammatory bladder contracture. For the treatment of chronic cystitis, it is not only to improve the urinary frequency, urgency, dysuria, etc., but also need to start the treatment of chronic cystitis pathogen. Such as Escherichia coli, Streptococcus, Pusococcus are common pathogen causing cystitis, so chronic cystitis is often secondary to pyelonephritis, kidney tuberculosis, prostatitis, urinary calculi and other diseases. Therefore, in the treatment of chronic cystitis, it is necessary to eliminate the presence of diverticulum, stones, foreign bodies or tumors. Therefore, it is more accurately treat. patients need adhere to treatment. can not abandon in halfway, otherwise, it is easy to cause repeat cystitis. Try to avoid the examination of catheters and urinary tract devices, because these tests are prone to infection. patients should drink more water, urinate frequently,don't keep urinate, because a large amount of urination can promote the discharge of bacteria, inflammatory, and reduce bacterial growth in the urinary tract.