Generally speaking, different treatment methods should be adopted according to the causes of edema: First, if the swelling of the mouth is caused by mouth ulcer or tooth extraction, you can take watermelon cream tablets orally to reduce the intake of spicy and stimulating food, reduce local inflammation and promote the decreasing of edema; Second, if the patient’s mouth is traumatized and the swelling is caused by soft tissue trauma, you can take amoxicillin and blood-stasis tablets orally to improve local blood circulation and reduce the symptoms of swelling; Third, if the patient’s mouth is severely injured, with large trauma and active bleeding, local pressure to stop bleeding is ineffective and accompanied by hematoma formation. If the patient’s mouth is severely injured, accompanied by large trauma and active bleeding, and the local pressure to stop bleeding is poor and accompanied by hematoma formation, to eliminate the swelling, the trauma needs to be thoroughly cleared and the fissure sutured, and only after the local infection and inflammation are controlled and the silk thread is completely removed, the swelling can slowly subside.