The technique can be used to treat benign and malignant lesions. Benign lesions include benign lung tumors, breast hyperplasia, breast fibroids, hepatic hemangiomas, prostate hyperplasia, uterine fibroids, hemangiomas, neurofibroids, cysts, warts, hemorrhoids, recurrent precancerous lesions, and oral leukoplakia. Malignant lesions include lung cancer, liver cancer, pancreatic cancer, breast cancer, brain tumor, spinal meningioma, prostate cancer, kidney cancer, adrenal tumor, perineal tumor, uterine cancer, cervical cancer, ovarian cancer, penile cancer, skin cancer, melanoma, bone sarcoma, tonsil cancer, throat tumor, nasopharyngeal cancer, liposarcoma, oral cancer, tongue cancer, maxillofacial tumor, neck tumor, etc. It can also be used for cancer pain relief. It is most commonly used today for liver cancer and lung cancer (including metastases). Ar-He knife has significant advantages in the treatment of solid tumors such as liver cancer, lung cancer, kidney tumors and breast cancer, and represents the advanced level of tumor treatment in the world. The scope of application of argon helium knife: 1.Tumors that are insensitive or ineffective to chemotherapy and radiotherapy. 2.Those who do not want to have surgery. 3.Those who cannot tolerate surgery due to physical reasons or organ function. 4.It is suitable for patients with all stages of solid tumors, especially for those who are unable to undergo surgery or other treatments have failed. Advantages: 1.Little damage to human body–no incision, no bleeding or less bleeding, percutaneous or trans-luminal treatment, less pain; 2.Fast effect, exact efficacy, tumor can be seen destroyed during the treatment; 3.Significant effect–For large tumor lesions, argon helium cryosurgery can kill 80% of cancer cells, for smaller tumor lesions, cancer cells can be 100% destroyed, with good success rate; 4.Significant effect on normal tumor, with good success rate. 4.No toxicity to normal organs and tissues, few complications, repeatable and repeatable; 5.Requirement for patients’ physical condition is relatively low, generally patients can tolerate; 6.Can be performed alone or combined with radiotherapy, chemotherapy or surgery; 7.Short hospitalization time, generally 3-5 days after one treatment; 8.Argon helium freezing causes obvious improvement of tumor immunity, which is equivalent to generating tumor immunity in the body after treatment. It is equivalent to producing tumor vaccine in the body.