Tongue cancer is a common malignant tumor of the oral and maxillofacial region. Most of the tongue cancers are squamous cancers, especially in the first 2/3 of the tongue, while adenocarcinoma is less common and mostly located at the root of the tongue. Tongue cancer can invade the tongue and palate arch and tonsil backward. In advanced stage, tongue cancer can spread to the floor of the mouth and jaw bone, and fix the whole tongue. So, what are the early symptoms of tongue cancer? The following are the early symptoms of tongue cancer. 1.Sudden loosening and loss of teeth, poor bite of teeth when chewing food, discomfort of dentures for those who have dentures, numbness and pain in the mouth and pharynx, and no improvement by general symptomatic treatment. 2.Limited lip red mucous membrane thickening and scaling formation, accompanied by gray-white keratinized spots. 3.Although some bulges and redundancies in the oral cavity are benign lesions, such as septic granuloma, papilloma, hyperplasia caused by denture stimulation, etc., a few of them are proved to be squamous cell carcinoma by pathological histology, which should also cause alarm. 4.The sudden appearance of mucosal erythema, white spots, edema, chancre, edema, flat tongue moss, bulge and granular granuloma in the oral cavity, although there is no obvious discomfort, but instead of healing after 2 weeks-4 weeks of treatment, it slowly spreads and increases. 5.Sudden increase in salivary secretion, nasal discharge with blood, salivation, swallowing and choking sensation, jaw and facial lumps and lymph nodes enlargement, and persist, even gradually aggravated. 6.The oral mucosa has long-term ulcers that do not heal, and the mucosa is pale and loses its luster, similar to white spots, and fibrous cords and hard nodes occur under the mucosa. 7.Multiple unexplained bleeding in the oral cavity and difficulty in opening and closing the mouth. 8.Sudden onset of limited tongue movement, slurred speech, and pain when speaking and swallowing.