PSA refers to prostate-specific antigen, and its normal value ranges from 0 to 4 nanograms per milliliter; if the indicator is 7 to 8, it is higher. Prostate Specific Antigen, is a specific marker for the prostate. Generally speaking, the value of total PSA ranges from 0 to 4 ng per milliliter, which is normal, while the indicator is 7 to 8, which is relatively high, then we should also further do the ratio of free specific antigen and total prostate antigen, and according to the change of the ratio, we should consider to do a prostate puncture, to make a definitive diagnosis of prostate cancer. Increased prostate-specific antigen is usually associated with inflammation of the genitourinary system, such as prostatitis, prostate hyperplasia, and urethritis. If the index of prostate specific antigen is high, you should consult the doctor in time, improve the urinary tract ultrasound and other related examinations to further confirm the diagnosis. In addition, prostate massage, rectal fingerprinting may also lead to elevated prostate-specific antigen, it is recommended that patients consult a professional doctor in a timely manner, and improve the relevant examination, a clear diagnosis, and then further treatment.