PSA is a prostate-specific antigen with a normal value of 0-4ng/ml. 68 years old with a physical examination of Psa30ng/ml needs to be alerted to prostate cancer, which is a more serious condition if it is prostate cancer, while the prognosis is better and less serious if it is other benign prostate diseases. PSA is prostate-specific antigen, a tumor marker that can be used to screen for prostate cancer. The patient is 68 years old, PSA 30ng/ml, suggesting that the possibility of prostate cancer is relatively large, it is recommended that the patient further ultrasound examination of the prostate, if necessary, fine needle aspiration biopsy of the prostate gland to clarify the need for surgical treatment, radiotherapy and so on, if prostate cancer. Elevated blood PSA level is also seen in other benign diseases, such as prostate hyperplasia, prostatitis, acute urinary retention, in addition, in various surgical operations of the prostate and various examinations of the prostate, even if there is only a very slight injury, can be caused by elevated serum PSA level, PSA elevation caused by the above reasons can be lowered by actively treating and removing the cause of the disease, and the prognosis is good. 68 years old physical examination Psa30ng/ml, we recommend the patient to further consult the doctor to clarify the diagnosis, and follow the doctor’s instructions for treatment.