There are several types of prostatitis, each with similar symptoms but not the same cause and treatment, and they need to be diagnosed differently from other diseases, so they need to be distinguished with the help of various tests, commonly used: physical examination: the simplest and most direct way of examination. Type I prostatitis: physical examination can reveal suprapubic pressure and discomfort, and in those with urinary retention, the suprapubic bulge of the bladder can be palpated. Rectal finger examination can reveal enlargement of the prostate, tenderness, increased local temperature and irregular shape. Prostate massage is contraindicated. Type II and III prostatitis: rectal finger examination can reveal the size and texture of the prostate, the presence or absence of nodules, the presence or absence of pressure pain and its extent and degree, as well as the tension of the pelvic floor muscles, the presence or absence of pressure pain in the pelvic wall, and massage of the prostate to obtain prostatic fluid. Laboratory tests: There are several commonly used. Routine examination of prostate massage fluid (EPS). Normal EPS has <10 leukocytes/HP, lecithin vesicles evenly distributed throughout the visual field, pH 6.3-6.5, and erythrocytes and epithelial cells are absent or occasionally seen. When leukocytes >10/HP and the number of lecithin vesicles is reduced, there is some diagnostic significance. Routine urinalysis and urine sediment examination, commonly known as urinary routine, is an auxiliary method to rule out urinary tract infection and diagnose prostatitis. Bacteriological examination: Type I: Stain microscopy, bacterial culture and drug sensitivity test should be performed on the middle urine, as well as blood culture and drug sensitivity test. The “two-cup” or “four-cup” pathogen localization test is recommended for types II and III. In addition, Chlamydia trachomatis and mycoplasma testing are also included. The most important thing is that you can find out that the prostate gland is unevenly echogenic, that the prostate gland is calcified, and that the periprostatic plexus is dilated, but there is still a lack of ultrasound to diagnose prostatitis. Urodynamics, including: ① urine flow rate, urine flow rate examination can give a general idea of the patient’s urinary status and help to differentiate prostatitis from diseases related to voiding disorders; ② urodynamic examination, which can detect vesicourethral dysfunction. CT and MRI, which can have potential application in identifying pelvic organ lesions such as seminal vesicles and ejaculatory ducts, but the diagnostic value for prostatitis itself remains unclear.