The prevention of prostate cancer is a topic of great concern to everyone. Some people say that eating tomatoes and lycopene is beneficial. Or some people say that it is beneficial to supplement trace element selenium for dietary supplement? And through some specific drugs to see if it helps? But there is no way to prevent this kind of prostate cancer. Whether eating tomatoes, supplementing selenium or using some special drugs, it can't achieve the purpose of preventing prostate cancer well. For men over 55 years old, it is recommended to have a PSA test. If the PSA index is high, regular reexamination or magnetic resonance examination or prostate biopsy is needed to find and treat the tumor in the early stage of prostate cancer.