Every night with a hot water bag on the stomach belongs to a physical intervention method, warmth, relieve fatigue, enhance intestinal motility and other benefits. 1. Warmth: the temperature of the hot water bag in 40 ~ 50 ℃ or so appropriate, through heat conduction can increase the body temperature, cold and warm. 2. Relieve fatigue: hot water bag on the stomach, can improve the local temperature, reduce local muscle spasms, relax muscles, can relieve fatigue. 3. Enhance intestinal peristalsis: hot compresses can promote intestinal peristalsis when indigestion. Some cases should not apply hot compresses to the stomach, such as skin inflammation, burns, suspected ectopic pregnancy, coma, suspected abdominal bleeding and other internal organs. Hot compresses after the discomfort, should promptly consult a doctor, under the guidance of a professional physician to identify the cause of the disease, and take appropriate therapeutic measures to avoid adverse consequences.