Patients with high blood pressure are allowed to eat onions. For patients with high blood pressure, a low-salt, low-fat diet is sufficient, for example, the total salt intake should be limited to less than 6 grams per day. If the patient has developed hypertensive kidney damage or hypertensive nephropathy, the total salt intake should be strictly limited to less than 3 grams per day. For some foods with high cholesterol and high calories, try to eat less or not. Onions can be eaten normally, however, it is not recommended to eat too much at once because after all, onions are still a relatively pungent and stimulating food. Therefore, patients with high blood pressure should eat more fresh fruits and vegetables, especially green leafy vegetables, which are rich in magnesium, potassium and folic acid, which help to further stabilize blood pressure and lower it, so it is more suitable for patients with high blood pressure to eat.