There is no clear scientific evidence that prostatitis can necessarily lead directly to prostate cancer. However, some scientific studies in recent years have found that the microenvironment of chronic inflammation may contain some inflammatory factors, cytokines and other adverse stimuli that can easily cause cancer. Prostatitis mostly occurs in young and middle-aged men, and prostate cancer is mostly seen in older men. Minimizing or avoiding exposure to prostatitis triggers may help prevent the development of prostate cancer. Commonly used screening tests for prostate cancer are: anal finger examination (rectal prostate examination), serum PSA (prostate specific antigen) test, and if necessary, further transrectal prostate ultrasound. If significant abnormalities are found, the doctor will recommend a prostate puncture biopsy to clarify the pathological diagnosis. A serum PSA value greater than 4ng/ml is generally used as the threshold for prostate cancer screening. However, an elevated PSA does not necessarily mean that you have prostate cancer. Other diseases, such as benign prostatic hyperplasia and acute prostatitis, may also present with elevated PSA. Rectal examination, prostate massage (cycling), prostate puncture biopsy, transrectal ultrasound, cystoscopy and indwelling catheter can also cause an elevated PSA value. Therefore, these operations should be avoided for 1 week prior to PSA testing, and long-term oral finasteride (e.g., Prostaglandin) can decrease the PSA value by about 50%, so the PSA test results should be analyzed comprehensively.