Lymphoma can be prevented by adjusting dietary habits, avoiding exposure to toxic substances, strengthening immunity and regular medical checkups. 1. Adjustment of dietary habits: daily need to reduce the intake of pickled products, avoid the intake of expired food and rotten food, avoid smoking and drinking, avoid stimulating food, eat more fresh vegetables and fruits, and drink more water. 2. Avoid contact with toxic substances: daily need to avoid long-term exposure to radiation, toxic substances. 3. Enhance immunity: usually keep a good mindset, more exercise, so as to enhance immunity, so that the body to maintain in a good state. 4. Regular medical checkups: in order to prevent lymphoma, it is necessary to go to the hospital for regular medical checkups and close follow-ups for early detection, diagnosis and treatment. To prevent lymphoma, comprehensive improvement is needed. If there are any uncomfortable symptoms, one should go to the hospital in time for perfect examination, and should not ignore any uncomfortable symptoms, so as not to lead to adverse consequences.