Under the guidance of ultrasound or CT, the needle is directly inserted into the lesion, and then the switch is turned on to release microwave, radio frequency or argon and helium gas. The first two methods will make ion vibration, cellular heat production, local diffusion, tumor cell coagulation and necrosis, to achieve the purpose of killing tumors; microwave needle is a unique needle, radiofrequency needle into the needle will also extend a few hair-like metal wire from the top, in the form of anchor distribution, after the treatment is completed, withdraw the needle, pull out of the body. Argon helium knife is put argon, helium gas, put argon gas first let the needle and the surrounding freezing, about minus 150 degrees, so that the tumor quickly necrosis, after achieving the purpose of helium gas quickly warm up, so that the needle thawed and pull out the needle, and quickly let the tumor cells disintegrate and die, so that it can not be repaired. This is basically the process. But each has its own characteristics, microwave and radio frequency are heat producing, more than 80 degrees, people are sensitive to heat, more pain; argon helium knife freezing, light pain. But the effect is the same. The operation of microwave, radio frequency is convenient, is the cable connection machine. Ar-He knife also dragging gas cylinder, very large, occupy a large space, the operation is also more trouble. In terms of cost, microwave because of domestic reasons, the state set a low fee, the benefits are poor, seriously affect the business; radio frequency, argon helium knife because it is introduced from abroad, the state set a high fee, the benefits are good, the popularity is higher. The picture is the schematic diagram of the new microwave instrument for liver cancer treatment, the doctor only holds the microwave needle, and there is ultrasound to guide the process, that is, the color ultrasound shines into the needle, watching the treatment changes, very intuitive, radio frequency treatment is basically the same; that is, the Ar-He knife treatment is connected to the gas cylinder behind the instrument, and there are other supporting personnel, the first two use less people, the latter more.