Most of the edema after breaking the foot is caused by ankle ligament injury, and the way to reduce the swelling includes physical therapy and medication. 1. Physical therapy: the broken foot is also clinically said to be acute ankle sprain, ankle sprain first need to brake the affected limb, ice, elevate the affected limb, elastic bandage fixation and other treatments, down to the ground when you can choose crutches or support for protection; 72 hours after the injury is a period of remission, you can be towel hot compresses to accelerate the damage to the local blood circulation, rapid reduction of swelling. 2. Medication: patients with obvious pain symptoms after injury can take oral ibuprofen, acetaminophen and other drugs to reduce the local inflammatory reaction and relieve pain; patients with obvious edema can take mannitol, sodium heptapeptide and other drugs to reduce swelling quickly. The above medications need to be used under the guidance of a doctor, avoid self-medication. If the patient breaks the foot after the swelling of the symptoms are not relieved, or accompanied by other symptoms, should go to the hospital in a timely manner, clear reasons to give targeted treatment.