After craniotomy surgery, you can eat more easily digestible food, such as fresh vegetables and fruits, high-quality protein, high-calorie food. Craniotomy surgery is more damaging to the human body and usually affects the patient’s digestive function. Therefore, after the surgery, you can eat more easy-to-digest, high-calorie, high-quality proteins, such as eggs, beef, mutton, chicken, and so on, and at the same time pay attention to the patient’s gastrointestinal function and eat more vegetables and fruits, such as celery, carrots, apples, bananas, oranges, and so on. If patients suffer from certain underlying diseases, such as hypertension, diabetes, etc., they must pay attention to a reasonable diet. Patients with high blood pressure should have a low-salt, low-fat diet, and eat less greasy and fried food, and diabetic patients should avoid a high-sugar diet and eat less fruits or snacks with high sugar content, etc. Individual differences between patients are large, specific dietary principles after craniotomy can consult a physician or dietitian.