Swollen feet with hot water or cold water compresses need to be divided according to the situation, if it is a trauma, both have to be used, if it is caused by other causes, you need to use hot water. 1. Trauma: such as sports injuries, 72h before the cold water intermittent compresses, hot water will aggravate the local edema, 72h after the hot water compresses can accelerate the local blood circulation, promote the recovery of the wound. 2. Other causes: such as nephrogenic edema, cardiogenic edema, etc., it is necessary to use hot water compresses, which can promote local blood circulation, dispersal of excess water, and can eliminate foot edema. In life, pay attention to padding the feet when lying down, more massage, soak the feet before going to bed to reduce swelling. If there is any discomfort, go to the hospital in time.