Poorly differentiated gum cancer metastasized to the head and liver generally has a poor prognosis and usually cannot be cured. Gum cancer that can be cured usually occurs in early stage cases, and the cure rate of early stage patients can reach more than 50% with surgical resection of part of gum tissues and corresponding jaw tissues plus postoperative radiotherapy. However, gingival cancer patients who have developed distant metastasis usually cannot be operated and can only rely on other treatments such as chemotherapy, radiotherapy, targeted therapy, etc., so they generally cannot be cured. Gum cancer is mostly highly differentiated squamous cell carcinoma, which can be clinically manifested as ulcers or papillary protrusions. Early gingival cancer invades the alveolar process and jawbone, which may result in loosening, shifting or even loss of teeth, accompanied by localized pain. The occurrence of gum cancer may be related to poor oral hygiene, bad teeth or denture repair. If patients are diagnosed with gum cancer, it is recommended to go to regular hospitals as soon as possible and receive professional treatment under the guidance of doctors to avoid delaying the condition.