Scarring joint deformity is a pathological deformity of the joint caused by excessive contraction of pathological scarring and is a common clinical complication of burn injury. It mostly occurs in the joints of the hands and extremities. It is generally considered to be related to systemic factors, local cause and extent of burns, the presence or absence of infection and the appropriateness of early trauma treatment, the timeliness of surgery, whether the joint is fixed in a functional position, and the timeliness of functional exercise. Fibroblasts in burn wounds are activated and highly differentiated into myofibroblasts, which have the cellular characteristics and contractile properties of smooth muscle. During the pathological healing process of burn wounds, fibroblasts in a continuous contraction state and their synthesized collagen together form a stiff scar tissue under the action of mucopolysaccharide matrix. After the scar heals, the scar tissue with large collagen deposits contract centripetally, causing contracture and stiffening of the entire scar tissue. If it occurs in the joint area, it can lead to scar contracture deformity. The clinical presentation and the rationale for non-surgical treatment are based on this. Scarring joint deformity causes ugly appearance, joint deformity, dysfunction, as well as secondary contracture deformity of muscles, tendons, bone joints and surrounding ligaments, causing psychological and mental trauma to the patient. Early treatment according to certain principles will reduce the excessive proliferation of scar tissue in the joint area and reduce the degree of joint deformity. Commonly used and more effective non-surgical treatment methods are introduced as follows: 1, exercise therapy: the most basic and most commonly used, with preventive and therapeutic effects. There are active exercise methods such as freehand training, resistance training, mechanical resistance training, etc. and passive exercise methods such as continuous and intermittent passive exercise, splinting, series of casts, traction, etc. For example, standardized exercises plus progressive resistance functional exercises for burned people with hand and other joint parts can significantly improve the recovery of each joint function. 2.Compression therapy: By applying pressure to the hyperplastic scar area, local blood flow is reduced, degeneration of fibroblasts occurs, and less collagen is produced to achieve the purpose of treatment. It should be carried out following the principle of early, continuous and moderate enough pressure, keeping the pressure at 25–30 mmHg. Using elastic bandage or elastic mesh to compress for more than one to three months has better effect on the prevention and treatment of hyperplastic keloid scars. In recent years, combined with the application of patch made of silicone, its treatment of scarring is more effective. The functional position of each joint of the upper limb is 50 degrees of shoulder abduction, 20 degrees of forward flexion, 25 degrees of internal rotation, 90 degrees of elbow flexion, 90 degrees of forearm rotation, 30 degrees of wrist dorsiflexion, and 30 degrees of wrist dorsiflexion with the fingers slightly separated in a semi-flexed position. The functional position of each joint of the lower limb is 10 degrees of hip flexion, 10 degrees of knee flexion and 90 degrees of ankle dorsiflexion, respectively. 4.Physical therapy: The purpose is to improve blood circulation, analgesia, retardation according to anti-muscle, accelerate tissue healing and reduce scar proliferation. Radiation heat, infrared light, visible light, etc. are mostly used. 5.Medication: often the scar surface is topically injected with steroid hormone scar such as Conrad and Tretinoin to interfere with the proliferation of the scar, so that the proliferating scar becomes flat and soft, and the pain and itchiness is reduced or disappears. 6. Radiation therapy: Irradiation with anterior X-ray can produce certain efficacy, but only for scar with small area. Local irradiation with X-rays or radium or cobalt 60 is more effective for newly emerged hyperplastic keloid and keloid scars. 7. Others: There are laser, freezing, zinc tablets, iontophoresis, ultrasound, wax therapy, Chinese herbal medicine, etc., but the efficacy is not exact and the clinical significance is not great. Non-surgical treatment should adopt different therapeutic measures according to different stages after burn injury: (1) the main goal of the burn period is anti-inflammation, swelling and pain relief, and corresponding treatment means should be taken according to the principle of scar prevention; (2) physical, drug and exercise therapy should be adopted in the late stage of burn injury to accelerate the healing of tissues and reduce the proliferation of scar, especially to avoid the possible influence on joint function; (3) the recovery period should follow the gradual Basic training of muscle strength, endurance, joint range of motion, flexibility and coordination should be performed. Scarring is an inevitable product of tissue repair after burns, and the purpose of non-surgical treatment is only to prevent excessive scar growth, to reduce the resulting joint deformity and its impact on function, or as an adjunct to surgical treatment. The most fundamental and effective method for joint scar contracture deformity is surgical plastic treatment, which involves excision of the contracted scar, full release of the scar, correction of the deformity, and repair and reconstruction of the tissue defect according to the defect. The best time for surgical treatment should not be missed due to complete reliance on non-surgical treatment or improper operation.