The arm is swollen after a fall, this situation is due to the following reasons: 1, consider is due to fracture and lead to localized swelling. After the arm fracture, the local blood vessels rupture, causing blood leakage and swelling. 2, consider is due to the arm after the fall, the local muscle soft tissue strain injury, causing swelling, pain. Swelling of the arm need to go to the hospital emergency surgery or orthopedics, X-ray examination of the arm to clarify whether there is a fracture. If there is a fracture, it will need to be treated with surgery or external fixation. If there is no fracture, and it is simply muscle soft tissue strain, you can apply blood circulation and eliminate stasis to reduce the swelling of the medication, and choose FUTALIN and other topical treatment, and need to cooperate with the rest, reduce the activities. After the fall, you need to pay attention to the arm injury to avoid exceeding the optimal treatment time, which may cause deformity healing.