With the increasing number of liver cancer patients and the increasing incidence of liver cancer, people’s concern about liver cancer is also increasing. Once diagnosed with liver cancer, how it should be effectively treated has become the focus of people’s attention. With the progress of medical science, the treatment methods for liver cancer are gradually increasing. First of all, radical resection of liver means complete resection of tumor, leaving the remaining liver without residual cancer and portal vein without cancer thrombus, and the five-year postoperative survival rate is about 50% when AFP turns negative and does not reappear 2 months after surgery, and no tumor residual or recurrence is seen in imaging examination. Usually, radical resection is the best treatment for patients with hepatocellular carcinoma, although complete cure is usually difficult for patients diagnosed clinically. Lobectomy has been proven to be the best treatment for liver cancer, but most of the liver cancer patients in China are combined with cirrhosis. If lobectomy is also performed for small liver cancer, the cancer will be removed, but the patient has to take great surgical risks. Among all liver cancer patients, small liver cancer patients account for a large proportion. Therefore, the accepted guideline for the surgical treatment of hepatocellular carcinoma is now: local resection instead of lobectomy in the presence of cirrhosis, because a large amount of functional liver tissue will be removed along with small hepatocellular carcinoma and the patient will inevitably die from liver dysfunction. This innovative treatment guideline has enabled most patients with small hepatocellular carcinoma to be surgically resected, and the surgical mortality rate is 10 times lower than that of lobectomy, and the long-term efficacy of local resection has not decreased but rather improved. Experts from Chengdu Ar-He knife Cancer Treatment Center suggest: Ar-He knife for liver cancer. So what is Ar-He knife? Ar-He knife is a minimally invasive ultra-low temperature cryoablation surgery system, which combines aerospace, bio-sensing, electronic computer, conformal monitoring, targeted therapy and other technologies, representing the highest level of cryo-engineering at present. After hundreds of years of continuous improvement and upgrading of cryotherapy, it can be regarded as a breakthrough in tumor ablation therapy technology, which is not only used for cryotherapy of previous surface tumors, but more prominently for deep tumors in vivo that can be monitored and treated. The Ar-He knife adopts local anesthesia and punctures under the guidance of CT, B-ultrasound and MRI. The 1.4-3 mm thick Ar-He knife (cryoprobe) is accurately punctured into the tumor, and a 3-4.5-6 cm diameter ice ball with a temperature of -160 degrees Celsius is formed around the needle tip, and the tissue inside the ice ball will be completely destroyed. The combination of multiple needles and the adjustment of argon output power can form various shapes of ice balls to completely destroy the tumor tissue and avoid damaging too much normal tissue. What is the effect of argon helium knife in treating early, middle and late stage liver cancer? Firstly, experts introduce the advantages of argon helium knife for solid tumor treatment: 1. The patient can be discharged from the hospital a few days after the operation. After the above detailed introduction, I believe you have a certain understanding of how to effectively treat liver cancer. Patients with liver cancer treatment must build up their confidence to overcome the disease and actively cooperate with the treatment, so as to maximize the survival period and improve the quality of survival.