Interventional surgery for small tumors is a specialized department focusing on interventional therapy, which is mainly used for the diagnosis and treatment of tumors. Interventional therapy is to deliver drugs, radioactive substances or other therapeutic substances directly to the tumor site through interventional instruments such as catheters to achieve the purpose of treatment. Small tumor interventional department can carry out early diagnosis, local treatment and palliative treatment of tumors. In contrast, hepatobiliary surgery is mainly aimed at surgical treatment of hepatobiliary system, including hepatectomy and cholecystectomy. Therefore, if interventional therapy of tumor is needed, it is a more appropriate choice to go to interventional department if the tumor is small.