There are round meatballs on both sides of the chin when touched usually are enlarged submandibular lymph nodes, most of them are caused by inflammation, and a few of them are related to tumor and tuberculosis, it is recommended to go to the hospital for examination and clarification in time. After careful observation and touching, nearly 1/3 of the patients can touch the subcutaneous lymph nodes in the submandibular position, the lymph nodes are more movable, movable, with smooth surface, such as a round ball, and some of the patients may have a slight tenderness, or have a feeling of discomfort when deeply touched, which is the result of long-term chronic submandibular lymphadenitis. Submandibular lymphadenitis is very common, due to the submandibular lymph nodes drain lymphatic fluid from the head and face area, when inflammation occurs in the oral cavity, including oral ulcers, dental caries, periodontitis, etc., it can lead to the enlargement of submandibular lymph nodes, and the lymph nodes will gradually disappear after the acute phase, but some patients have long-term enlargement of the submandibular lymph nodes after the acute phase, for example, chronic lymphadenitis, which has no way of disappearing, so many patients, can feel such a round ball, that is, an enlarged lymph node. However, other factors can not be ruled out, it is recommended to consult a doctor in a timely manner, by the doctor to clarify the cause of the disease, to give targeted treatment.