The increase in bowel sounds after drinking milk is considered to be related to lactose intolerance, chronic enteritis, allergic enteritis and other causes. 1. Lactose intolerance: Lactose intolerant patients lack lactase enzyme in the intestines, when patients drink milk and other dairy products, it is easy for the lactase enzyme deficiency can not degrade lactose in the milk, resulting in excessive accumulation of gas and water in the intestines triggered by the symptoms of intestinal sound enhancement. During the onset of the disease, patients may also experience abdominal distension, diarrhea, abdominal pain, nausea, vomiting and other symptoms; 2. Chronic enteritis: patients with chronic enteritis are prone to recurring clinical symptoms such as irregular bowel movements, diarrhea, abdominal distension, abdominal pain and loss of appetite. The protein content in milk is high, and drinking too much of it may increase the burden on the intestinal tract and trigger acute attacks of chronic enteritis such as increased bowel sounds; 3. Allergic enteritis: for people with allergies, drinking milk can trigger allergic enteritis with increased bowel sounds. Its pathogenesis is related to the non-specific inflammation caused by allergic factors that stimulate the intestinal mucosa and lead to intestinal dysfunction. If the patient drink milk in a short period of time suddenly appeared obvious diarrhea, abdominal pain, blood in the stool and intestinal tinnitus symptoms, most of the patients are considered to belong to the manifestation of allergic enteritis. There may be other reasons for the increase in bowel sounds after drinking milk, and the patient needs to go to the gastroenterology department of the hospital to confirm the diagnosis and treatment.