Usually, people with a weak stomach can drink milk, but it is recommended to drink it after a meal. Milk is rich in vegetable proteins, vitamins, calcium, phosphorus, iron, zinc, copper, fat, phospholipids, etc. for the normal operation of the major systems and tissues to provide an adequate source of energy. Vegetable proteins are easier to be broken down and absorbed by the human digestive system compared to animal proteins, so for people with a bad stomach in general can drink milk. But for some stomach bad, such as non-atrophic gastritis, peptic ulcer patients are recommended to drink milk after meals, because drinking milk on an empty stomach will stimulate the secretion of gastric acid, which will lead to patients with acid reflux, heartburn, abdominal pain symptoms, drinking after meals can reduce the stimulation. In addition, it is recommended that patients with a bad stomach go to the hospital in time to avoid delaying their condition and decide whether they can drink milk according to the doctor’s advice.