Gum cancer, also known as gum cancer, is a type of malignant tumor that occurs in the oral cavity. The most common sites of gum cancer include the bicuspid region as well as the molar region and the labio-buccal sulcus. The early clinical manifestations of gum cancer are swelling, ulceration and bleeding when brushing teeth, toothache, tooth loss and loosening when the alveolar bone is invaded, and long-lasting trauma after tooth extraction. If the tumor invades the mandibular canal, it will manifest as numbness and swelling of the lower lip; if the tumor invades the posterior region of the molar, it will manifest as restricted opening. For patients with upper gum cancer, if it invades the nasal cavity and maxillary sinus, it can manifest as nasal congestion and nasal bleeding; for the tumor in the anterior region, if it enlarges, it will cause difficulty in closing the mouth, etc. Patients with gum cancer can generally achieve a 5-year survival rate of 50%-60% through surgery, radiotherapy, chemotherapy, etc.