Tongue cancer usually recurs and metastasizes to submandibular lymph nodes, cervical lymph nodes and other places. Tongue cancer is a kind of malignant neoplastic disease occurring in the tongue, and its etiology is mainly related to poor oral hygiene, smoking and drinking, local trauma of the oral cavity and other factors. Since the tissues of tongue have rich lymphatic vessels and blood circulation, it is easy to have lymph node metastasis as well as blood line metastasis. If tongue cancer is located in the anterior part of the tongue, it usually metastasizes to submandibular, upper and middle group of deep neck lymph nodes and other regions. If tongue cancer is located in the tip of tongue, most of it will metastasize to the areas of sublingual and deep middle group of neck lymph nodes. In addition, some tongue cancers may also metastasize to distant places, such as lungs, liver and other organs through blood transportation. Tongue cancer patients need regular review and long-term follow-up to monitor recurrence and metastasis. If symptoms such as mouth ulcers, pain and abnormal swelling appear, it is recommended to seek medical treatment in time for relevant examination.