Clinically, different treatment methods can be adopted according to the specific causes of the swollen chin: a. If it is a malignant tumor in the oral cavity that causes submandibular lymph node invasion and causes obvious swelling of the chin, patients can improve the CT examination of the head at this time to clarify the specific location of the oral tumor lesion. The swollen chin can be relieved by early surgery to remove the tumor, combined with local radiotherapy, systemic chemotherapy and immunotherapy to promote the submandibular lymph nodes to subside and absorb and kill the residual tumor cells in the body. Second, if the patient accidentally falls during strenuous activities, causing soft tissue injury to the chin, it can cause local hematoma resulting in swollen chin. In this case, local ice can be applied to promote capillary constriction and reduce exudation. 24 hours later, hot ointment pack can be applied externally, blood circulation and blood stasis cream can be applied externally, and drugs such as swelling and pain, mai zhi ling can be taken orally to promote faster absorption of soft tissues in the chin and reduce pain symptoms.