Prostate pas test generally do not need fasting. PSA test is a clinically important tumor marker for screening prostate cancer, PSA Chinese full name is prostate specific antigen, the so-called specific refers to antigenic protein, by the prostate gland epithelial cells can be synthesized and secreted.PSA test is generally not affected by eating, so most hospitals do not have a special dietary requirements for PSA test, generally can be tested at any time. However, due to the sensitivity of PSA, it is easy to be biased by some stimulating factors, so it should be noted that if there is ejaculation, it needs to be examined for more than 24 hours; after catheterization or cystoscopy, it needs to be examined for more than 48 hours; more than 1 week after rectal diagnosis of the prostate; more than 1 month after prostate puncture biopsy; and it should be clarified that there is no urinary retention, prostatitis, and so on. Specifically whether the need for fasting, the patient can go to the local regular hospital consultation to understand the specific requirements of the local hospital.