Liver cancer is categorized into stage I, II and III. The higher the stage, the more difficult it is to treat and the worse the prognosis. The specific staging is as follows: 1. Stage I: It is also divided into Stage Ia and Stage Ib. Stage Ia refers to the maximum diameter of a single tumor not more than 3cm, without cancer embolism and metastasis; Stage Ib refers to the maximum diameter of a single tumor or two tumors with the sum of their diameters less than or equal to 5cm, without cancer embolism and metastasis. 2. Stage II: It is divided into stage IIa and stage IIb. Stage IIa refers to single or two tumors with maximum diameter less than or equal to 10cm, no embolus and no metastasis; stage IIb refers to single or two tumors with maximum diameter greater than 10cm or two tumors with maximum diameter greater than 5cm, no embolus and no metastasis. 3. Stage III: divided into Stage IIIa and Stage IIIb. Stage IIIa refers to patients with one of portal vein trunk, inferior vena cava embolus, abdominal lymph node metastasis or distant metastasis regardless of the tumor condition, and Stage IIIb refers to patients with liver function Child grade C. If patients have related symptoms, it is recommended to go to the hospital in time to improve the related examination, make a clear diagnosis, and actively treat the disease.