There is no food that lung cancer is most afraid of. Lung cancer patients need to have a balanced and healthy diet, consume high protein, high vitamin and light diet. Lung cancer is a malignant tumor originated from bronchial mucosa or glands in the lungs. Clinical and related researches have not found out which foods have the effect of treating lung cancer, nor have they found out which foods will lead to the aggravation of lung cancer, so there is no food that lung cancer patients are most afraid of eating. When receiving treatment for lung cancer, doctors will make a comprehensive assessment by combining the pathological type, clinical staging and overall status of the patient, and then choose appropriate programs such as surgery, radiotherapy, chemotherapy, targeted therapy, immunotherapy and other comprehensive treatments. Lung cancer patients need to have a balanced diet and consume high protein diet, such as meat, eggs and milk. Lung cancer patients are in high consumption state, high protein diet can supplement patients’ protein and improve immunity. High vitamin and light diet, avoid spicy and stimulating diet. Patients need to consume high-fiber and high-vitamin food such as fruits and vegetables in moderation, and avoid spicy and stimulating food so as not to cause gastrointestinal discomfort.