To Evaluate the Safety and Efficacy of Microwave Ablation Therapy in Patients With Primary Liver Cancer

Inclusion Criteria: * Pathological and/or clinical diagnosis confirmed as primary liver cancer (hepatocellular carcinoma). * Single tumor with maximum diameter ≤ 5cm ; or tumors number ≤ 3 with maximum diameter ≤ 3cm. * No invasion of blood vessels, gallbladder, adjacent organs and distant metastasis. * Child-Pugh class A or B classification, or meet the standard after treatment. * Able to understand the content of clinical trials, voluntarily participate in the trial and sign informed consent. Exclusion Criteria: * Pregnant or breastfeeding, or preparing to become pregnant during the trial. * Participating in clinical trials of other devices or drugs. * Uncorrectable coagulation dysfunction (after corrective treatment, the PT exceeds the normal control value by more than 3s). * PLT \<50x109/L. * Intractable massive ascites. * Cachexia. * MRI examination is contraindicated or the investigator judges it is not suitable for MRI examination. * Patients with bleeding from esophageal (fundus of stomach) varicose veins 1 month before surgery. * Patients with impaired consciousness or unable to cooperate with treatment. * The investigator judged that it is not suitable to participate in clinical trials.