The treatment of frozen shoulder, using ultrasound-guided small needle knife treatment is the first innovative technology in the province. It is an accurate and safe treatment for frozen shoulder. It has high efficacy (cured), quick effect (immediate effect after treatment), short course of treatment (1 time for each adhesion point), safety, no rebound, no closure, no toxic side effects, and the treatment also has the effect of repairing and maintaining the joint. The treatment is aimed at both extra-articular and intra-articular, and is carried out in two areas. Extra-articular: In frozen shoulder, there are adhesions of ligaments and tendons on the anterior, lateral, posterior and medial sides of the shoulder joint, causing the joint to be unable to move normally. We do small stitches at these adhesion points to loosen the adhesions and thus restore joint mobility. Intra-articular: Intra-articular injections of sodium vitreous acid are given to lubricate and repair the joints and to relieve inflammation and pain. No adverse reactions, no side effects, not closed. Sodium vitrate is the main component of synovial fluid, which plays a lubricating role in the joint cavity and reduces friction between tissues, while playing an elastic role and buffering the stress on joint cartilage to perform its proper physiological function. The injection of sodium vitrate into the joint cavity can significantly improve the inflammatory response of synovial tissue, enhance the lubricating function of joints, protect joint cartilage, promote the healing and regeneration of joint cartilage, relieve pain and increase joint mobility.