Interventional treatment options for rectal cancer liver metastases mainly include hepatic artery chemoembolization, percutaneous ablation and so on. The commonly used interventional methods for rectal cancer liver metastases liver cancer contain: vascular interventional therapy (including transcatheter hepatic artery perfusion chemotherapy, transcatheter hepatic artery chemoembolization, transmenstrual vein interventional therapy, etc.), and non-vascular interventional therapy (including percutaneous ablation, ultrasound ablation, percutaneous radioactive particle implantation, etc.). Commonly used treatment options are transcatheter hepatic artery chemoembolization, percutaneous radiofrequency ablation: 1. Transcatheter hepatic artery perfusion embolization and chemotherapy is percutaneous puncture femoral artery cannulation, hepatic artery angiography, followed by perfusion of chemotherapeutic drugs and injection of embolic agents via tumor blood supply arteries to ensure maximization of chemotherapeutic drugs in localized foci and blockage of tumor blood supply. 2. Radiofrequency ablation is a thermophysical ablation procedure. After the radiofrequency needle accurately punctures into the tumor, the radiofrequency needle connected with the generator can emit high-frequency frequency wave, which can stimulate the ionic oscillation in the tissue cells and produce heat, and the local temperature can reach 80 to 100℃, which can quickly and effectively make the local tissues dehydrate, coagulate and dehydrate, etc., and cut off the blood supply around the tumor. For patients with liver metastasis of rectal cancer, it is recommended to consult regular hospitals and choose appropriate treatment plan according to medical advice.