Pain in the incision of cesarean section on rainy days is usually caused by poor local blood circulation during rainy days. When it rains or in normal times, you can do more localized hot compresses to promote local blood circulation, which can help to relieve the symptoms. For example, hot towels, warm water bags, or putting salt in a bag after it has been heated up, can improve local blood circulation and promote symptomatic relief. If you use sea salt to apply hot compresses, its heat storage time is relatively long, so the duration of the compress is also relatively long. In addition, you can also use infrared lamps or microwave therapy to irradiate the wound, can also achieve the above effect.