The danger of using a hot water bag on the lower tummy is the possibility of burns. If you can do it safely, using a hot water bag on the little tummy can relieve intestinal cramps, menstrual pain and other symptoms. Use hot water bag compress small stomach, when the water temperature in the hot water bag is too high, long time directly against the skin hot compress, can lead to local skin burns. The way to prevent burns from occurring is to avoid filling it with too hot water, or you can apply hot compresses through towels or clothes. Hot compresses have the effect of increasing blood circulation and relaxing local muscles, so in the case of intestinal cramps, hot compresses can be used to relieve spasms in the smooth muscles of the intestines to ease the pain. Menstrual pain is due to the production of prostaglandins by the endometrium, resulting in excessive uterine contractions and vascular spasms, hot compresses can promote blood circulation, so they can relieve menstrual pain. If the hot water bag compress small stomach burns, the local skin can be red, swollen, pain, if there is a blister formation or dull pain, it means that the burns are more serious, you should avoid picking through the blisters, as soon as possible to consult a doctor, please doctor to be dealt with.