Supraclavicular brachial plexus block is a commonly used technique for upper limb anesthesia and analgesia. Recently, ultrasound can visualize the trajectory of the brachial plexus, surrounding fascia and anatomical markers, among which standardized scanning and imaging, needle techniques and drug injection methods gradually formed a precise supraclavicular block technique system. However, the application and promotion of precise supraclavicular blocks are in their infancy, risk of intraneural injection, phrenic paralysis, and lack of block dynamics are still difficult and painful points in clinical anesthesia practice. To improve the anesthesiologists' understanding of these techniques and promote their clinical application, this paper focuses on its anatomical basis, approach, and technical characteristics as well as their application in arthroscopic shoulder surgery.