Leukemia can be prevented, but prevention does not mean it will not happen. 1. The pathogenesis of leukemia is very complex and is the result of a combination of factors. 2. Factors known to cause leukemia include chemical substances, ionizing radiation, and viral infections. Chemical substances include long-term exposure to benzene and methanol; ionizing radiation includes gamma rays and X-rays; and viral infection includes EBV. The above disease-causing factors should be avoided in time, which can indirectly prevent leukemia. 3. For patients whose immediate family members have leukemia, regular medical checkups are needed so that leukemia can be detected and treated as early as possible. 4. In addition, it is also necessary to strengthen their own exercise, enhance the body’s immunity, and actively prevent this disease in daily life. After the appearance of leukemia, it is necessary to seek medical treatment in time.