Prostate cancer is a common urological tumor in elderly men, and is the first tumor with the highest incidence and the second highest mortality rate in men in Western countries in Europe and America. With the improvement of living standard and the change of high-fat and high-protein diet structure, the incidence rate in China has been increasing significantly in recent years. Prostate cancer mostly has no obvious clinical manifestations in the early stage, and some of them can have symptoms of urinary obstruction, such as frequent, urgent and painful urination, which can be easily misdiagnosed as benign prostatic hyperplasia. If the symptoms such as severe lower urinary tract obstruction, hematuria, generalized bone pain and pathological fracture come to the clinic, it is often at an advanced stage and the time for early surgery for radical treatment is lost. Therefore, early diagnosis is an important part of the treatment of prostate cancer. The treatment of prostate cancer must be individualized, and the treatment method needs to be adapted to the patient’s life expectancy, condition, family and economic status. Early stage prostate cancer can be cured by radical surgery and radical radiotherapy. Because of the long natural course of prostate cancer patients, the tumor growth rate is relatively slow. If the disease is already in the middle or late stage, endocrine therapy, chemotherapy and radiotherapy can also be used to significantly delay the course of the disease and improve the quality of life. So how to prevent prostate cancer? First of all, we should pay attention to the daily diet, reduce the intake of red meat, eggs and high-fat dairy products, increase the intake of soy products and vegetables, choose natural foods to supplement vitamins, and maintain the traditional Chinese diet. Moderation of sex life to ensure a happy marriage is also indispensable. Changing bad habits, quitting smoking and alcohol, maintaining psychological balance, strengthening physical fitness, regulating life rhythm, keeping endocrine stability, delaying aging thus reducing the incidence of prostate cancer, slowing down the incidence of prostate cancer and thus improving the quality of life. If the PSA value is greater than 4ng/ml, you should immediately consult a urologist to improve the relevant tests to rule out the possibility of prostate cancer.