Chronic cystitis can be detected by routine urinalysis, but sometimes it may need to be supplemented with other tests, it is not a specific test, for example, it also needs to be supplemented with urine culture, drug sensitivity test, cystoscopy and other tests to further confirm the diagnosis. When chronic cystitis occurs, abnormalities in the urine routine can occur, such as elevated white blood cell counts, positive nitrites, elevated bacterial counts, and other changes. However, chronic cystitis is not necessarily the cause, pyelonephritis, inflammation of the ureter, inflammation of the urethra can also cause similar changes, which need to be combined with the patient’s symptoms or further cystoscopy to further clarify. If the patient’s discomfort is localized to the lower abdomen and the cystoscopy shows chronic congestion and erosion of the bladder, the diagnosis of chronic cystitis can be confirmed. Through urine culture examination, the pathogenic bacteria of the infection can be further clarified, and according to the results of drug sensitivity test, drugs can be selected to carry out relevant treatment.