When the arm is swollen from work, different methods can be used to reduce the swelling depending on the severity of the injury to the patient’s arm. First, if the patient’s arm is swollen due to local soft tissue injury caused by too much work. You can promote the rapid absorption of local arm swelling and reduce local pain symptoms through adequate rest, appropriate massage and physical therapy, local hot ointment or Jinhuang San ointment, and oral swelling and pain relief. Second, if the patient exerts too much force during the work process, causing the muscle at the arm to tear, accompanied by the formation of local hematoma. At this time, the patient’s swelling symptoms are very obvious, accompanied by increased local skin temperature and uncontrollable pain. It is recommended to improve the local ultrasound examination as soon as possible to clarify the scope and size of the hematoma, perform surgery to remove the hematoma as soon as possible and apply local pressure.