PFA ablation of tumors is often referred to as irreversible electroporation (IRE) ablation therapy, which is also known as "nano knife" in clinical practice. Its technical principle is the irreversible electroporation effect of high-voltage pulsed electric field, which has the advantages of tissue selectivity, high efficiency, etc., and has greater advantages for the ablation of tumors close to blood vessels, nerves, bile ducts, peritoneum and other sensitive locations. It has the advantage of tissue selectivity and high efficiency for the ablation of tumors in sensitive locations near blood vessels, nerves, bile ducts and peritoneum.