The development of science and technology has made ultrasound able to clearly display the internal tissue structure of the human body, the directionality of ultrasound can be quite accurate in locating lesions, and the dynamic changes in tissue anatomy can be observed in real time, and its accuracy and safety are incomparable with other imaging means, so ultrasound-guided puncture technology was born, this technology is under the surveillance and guidance of real-time ultrasound images, for the body This technique is a clinical technique for puncturing lesions or targets in the body under the surveillance and guidance of real-time ultrasound images. The specific practice is to avoid important organs and larger blood vessels and nerves under the guidance of ultrasound, and to accurately penetrate the puncture needle into the diseased tissue for treatment or to carry out pathological examination by aspirating or cutting out a small amount of cells or tissues, which avoids damage to the surrounding tissues to the greatest extent. This also allows observation of the puncture site and the puncture path immediately after puncture, so that possible bleeding and other phenomena can be detected and treated in the shortest possible time to avoid more serious complications. Ultrasound-guided puncture is often used for the diagnosis of lesions, from small lymph nodes and nodular lesions in the thyroid gland and breast to large lesions in the abdominal cavity, which can be safely and accurately localized under ultrasound guidance to maximize the positive detection rate of lesions, i.e., to obtain the cells of lesions more precisely and increase the accuracy of diagnosis. At present, the equipment used for ultrasound-guided puncture is also being improved, firstly, the design of the puncture needle is thinner to minimize the damage to the tissue, and according to the characteristics of ultrasound image development, the needle material is constantly improved to be able to develop well under ultrasound, and secondly, the puncture positioning frame suitable for various ultrasound probes is also widely used to improve the safety and accuracy of ultrasound-guided puncture. In addition, various intracavitary ultrasound devices, such as ultrasound gastroscopy and ultrasound enteroscopy, have been designed to match the puncture of different parts of the body. Ultrasound-guided puncture is now also used in the treatment of lesions, and as a result, various advanced technologies of ultrasound intervention have emerged. The simplest is the treatment of various benign cystic lesions, such as liver cysts and kidney cysts, which need to be treated when they develop to a certain extent and affect the health of patients. But ultrasound-guided puncture can be performed under local anesthesia, by inserting a very fine puncture needle into the cystic cavity and injecting anhydrous alcohol and other sclerosing agents for effective treatment, which not only has no destructive effects on the body (just a puncture needle eye), but also has almost no pain for the patient, and can be repeated once the recurrence occurs, avoiding the The body is not only undamaged (just a puncture eye), the patient suffers little pain, and repeat treatment can be performed in case of recurrence, avoiding any harm to the body. Of course, there are many other means of ultrasound-guided puncture technology applied to treatment, such as ultrasound-guided puncture for radiofrequency and microwave treatment of various benign and malignant tumors, ultrasound-guided puncture into the obstructed cavity (such as biliary obstruction) for drainage, stent placement and other techniques, which also alleviate the pain, improve the quality of life and prolong the survival of patients with advanced inoperable tumors. The specific practices will be described in a subsequent article.