Minimally invasive tumor interventional therapy involves the delivery of special catheters to the tumor arteries for infusion of chemotherapeutic drugs and embolization of tumor vessels to inhibit tumor growth. Interventional treatment of larger lesions before surgery can fix or even shrink the tumor, providing the possibility of later surgery. Pre-operative, intra-operative and even post-operative interventions are palliative treatments that provide assistance to surgical treatment. Interventional treatment of tumor is helpful for many solid tumors, and also for palliative treatment of gastric cancer and intestinal cancer. Interventional therapy is a very important aspect in the comprehensive treatment of tumors.