Abdominal bloating at 4~5 pm every day is mainly considered to be related to dietary factors, poor living habits, gastrointestinal tract dysfunction, and so on. 1. Dietary factors: Because patients eat too much food at noon, consume food that is difficult to digest, and do not mix food properly, etc., the food stays in the gastrointestinal tract for too long and produces a large amount of gas after fermentation, leading to abdominal distension at 4-5 p.m. every day. 2. Poor living habits: patients are used to sitting or lying down after eating, resulting in a lack of movement after meals, slowing down of gastrointestinal peristalsis, incomplete digestion and absorption of food, generating a large amount of gas, which triggers the symptoms of abdominal distension at 4~5 pm every day. 3. Gastrointestinal dysfunction: due to the patient’s gastrointestinal dysfunction, intestinal peristalsis is slow, food residue in the intestinal tract stays for too long, fermentation reaction occurs, generating a large amount of gas, resulting in abdominal bloating symptoms every day at 4~5 pm. It is recommended that patients go to the hospital in time when the above symptoms occur. Improve the relevant examination, under the guidance of professional physicians to clarify the cause of the disease, and follow the doctor’s instructions for treatment, so as not to delay the condition.