The results of the study show that China accounts for more than 20% of the new cancer patients worldwide each year. The guideline recommendation can more objectively elaborate and answer the questions that patients and families wonder about, and we hope that we will look at the problem with a scientific attitude and not believe in rumors that harm people and themselves. Kidney cancer accounts for 3% of cancer incidence and death in men and 2% in women. The directly related factors are obesity and smoking. Therefore, it is especially important to quit smoking and maintain a healthy weight. Prostate cancer is the most common cancer among men in the United States. Eating more tomatoes, cauliflower, beans and fish can help reduce the risk of its development. The protective effects of vitamin E and selenium and the corresponding supplements are not yet conclusive. Excessive calcium intake is associated with highly malignant prostate cancer, so excessive calcium intake or calcium supplementation is not recommended. In addition, statistics have found that overweight and obese prostate cancer patients have poor treatment outcomes. Bladder cancer is associated with smoking and certain chemical substances. Data show that consuming a lot of vegetables and fruits and drinking a lot of water can help reduce the risk of its occurrence.