Prostate antigen generally refers to prostate-specific antigen, and it is not possible to use total prostate-specific antigen greater than 10 μg/L alone to determine whether or not it is cancer. Normal serum total prostate-specific antigen is less than 4 μg/L, free prostate-specific antigen is less than 0.8 μg/L, and free prostate-specific antigen/total prostate-specific antigen is greater than 25%. If free prostate-specific antigen/total prostate-specific antigen is less than 25% and total prostate-specific antigen is greater than 10 μg/L, it suggests that the risk of prostate cancer is relatively high, but it should not be used as the sole indicator for diagnosing cancer. It is recommended that patients with total prostate-specific antigen greater than 10 μg/L need to seek medical attention for further physical examination, imaging examination and prostate puncture examination to assist in definitive diagnosis. It is recommended to actively seek medical treatment under the guidance of specialized physicians.