The occurrence of pediatric nephroblastoma is hereditary. With reference to the general approach to tumor prevention, understanding the risk factors for tumors and developing appropriate control strategies can reduce the risk of tumors. There are 2 basic clues to prevent the occurrence of tumors, and they can help the body to improve its resistance even if tumors have already started to form in the body, and these strategies are described as follows: 1. Avoid harmful substances (cancer-promoting factors) Some factors related to the occurrence of tumors are prevented before they develop. Many cancers can be prevented before they are formed. 1988 a report from USA compared in detail the international situation related to malignant tumors and suggested that many known malignant tumors whose external factors are in principle preventable, i.e. about 80% of malignant tumors can be prevented by simple lifestyle changes. Continuing retrospectively, a study done by Dr. Higginson in 1969 concluded that 90% of malignancies are caused by environmental factors. “Environmental factors” and “lifestyle” refer to the air we breathe, the water we drink, the food we choose to make, the habits of our activities and social relationships. 2.Improve the body’s immunity against tumor The focus of tumor prevention and treatment we are facing now should first focus on and improve those factors that are closely related to our life, such as quitting smoking, reasonable diet, regular exercise and weight reduction. Anyone who follows these simple, sensible lifestyle practices can reduce their chances of developing cancer. The most important things to improve immune system function are diet, exercise and worry control. Healthy lifestyle choices can help keep cancer at bay. Maintaining a good emotional state and appropriate physical exercise can keep the body’s immune system in optimal condition, which is equally beneficial in preventing tumors and preventing the occurrence of other diseases. In addition, studies have shown that proper activity not only strengthens the body’s immune system, but also reduces the incidence of colon cancer by increasing the peristalsis of the body’s intestinal system. Here we will mainly recognize some of the issues of diet in preventing the occurrence of tumors. Vitamin A plays an important role in reducing the risk of cancer Human epidemiological and animal experimental studies have shown that vitamin A plays an important role in reducing the risk of cancer. Vitamin A supports normal mucous membranes and vision, and it is directly or indirectly involved in most tissue functions in the body. Vitamin A is found in animal tissues such as liver, whole eggs and whole milk, and in plants in the form of beta-carotene and carotenoids, which can be converted to vitamin A in the human body. Low blood levels of vitamin A increase the risk of malignancy, and studies have shown that those with low blood levels of vitamin A intake have an increased likelihood of lung cancer, while smokers with low blood levels of vitamin A intake are twice as likely to develop lung cancer. Vitamin A and its mixtures can help remove free radicals from the body (free radicals can cause damage to genetic material) and, secondly, can stimulate the immune system and help the body differentiate cells that develop into orderly tissue (whereas tumors are characterized by disorder). Some theories suggest that vitamin A can help cells mutated by early carcinogenic attack to reverse and become normal growing cells. There is now widespread interest in research on phytochemistry, the chemical substances found in plants, including the vitamins and other substances found in plants. Thousands of chemicals found in plants have been identified, many of which have anticancer effects. The protective mechanism of these chemicals not only reduces the activity of carcinogens but also enhances the body’s immunity against carcinogens. For example, a cup of kale contains only 50 mg of vitamin C and 13 U of vitamin E, but its antioxidant activity is equivalent to that of 800 mg of vitamin C and 1,100 U of vitamin E. It can be inferred that the antioxidant effect of fruits and vegetables is much stronger than that of vitamins as we know them. The effect is much stronger than that of vitamins we know. Undoubtedly natural plant products will help in future cancer prevention efforts.