After a broken foot, the pain will be more severe on the second day compared to the first day. There are two main mechanisms for this situation: 1. After a broken foot, there will be local subcutaneous bleeding and then rapid aseptic inflammation, both of which will be more serious on the second day compared to the first, resulting in more pain on the second day compared to the first. 2. The swelling of the ankle joint will be heavier on the second day compared to the first. This is because the blood circulation is slower after a night’s rest, and the ankle joint is in a relatively lower position. All these factors will cause the swelling to be heavier on the first day. The combination of these two mechanisms causes the patient to feel pain in the foot or around the ankle on the second day compared to the first. In this case, the following can be done: 1. use a pillow to raise the ankle joint; 2. apply some safflower oil or some non-steroidal anti-inflammatory drugs, such as Fotarine cream, to the painful area. If the pain is not relieved in this way, then you need to go to an orthopedic clinic in time.