A malignant tumor on the liver suggests that the condition is more serious, and it is necessary to determine whether it is a primary malignant tumor of the liver or a metastatic malignant tumor of the liver. 1. Primary malignant tumor of liver: primary malignant tumor of liver without metastasis can be treated with surgery as early as possible, and when distant metastasis or local spread occurs, chemotherapy, radiotherapy, interventional therapy, targeted drug therapy can be carried out, and so on, which is more serious. 2. Metastatic malignant tumor of liver: the problem of metastatic malignant tumor of liver is also more serious, malignant tumors outside liver can be metastasized through blood line metastasis, lymphatic metastasis and direct infiltration metastasis, forming metastatic malignant tumor of liver, which suggests that the condition is very serious, and should not be over-treated at this time. When malignant tumor of liver occurs, it is recommended to consult hepatobiliary surgery department of regular hospital for diagnosis and treatment.