The common reasons for patients to have swollen right submandibular lymph nodes are generally the following: a. Patients accidentally hit the right submandibular during strenuous activities, which can cause local soft tissue injury, accompanied by obvious swelling and painful appearance of swollen lymph nodes. At this time, local ice packs can be used to reduce edema, and external rubbing of blood circulation cream can improve local blood circulation to promote the swollen lymph nodes to subside more quickly. Second, if the patient is accompanied by acute infections such as acute pharyngitis, oral ulcers and suppuration of teeth, it will also cause the right submandibular lymph nodes to swell significantly, and active anti-infection treatment can be given at this time. After the inflammation in the patient’s body is controlled, the swollen right submandibular lymph node can slowly subside, and the treatment effect is relatively good. Third, if the patient is suffering from malignant tumor of oral cavity or nasopharynx, the tumor cells invade the right submandibular lymph node along the lymphatic vessels, which can also cause obvious enlargement and hyperplasia of lymph nodes. In this case, even if the primary tumor is surgically removed, it is easy to cause recurrent attacks and the prognosis is relatively poor.