Supracondylar humerus fracture is one of the common fractures in children, and closed reduction is still the preferred method of reduction compared with incisional reduction, which has the advantages of less trauma, better fracture healing, and faster functional recovery. Currently, most of the closed reduction methods introduced in the literature and monographs are two-person or three-person methods, and the lifting and traction reduction method introduced in this paper is a single-person method of reduction. Anesthesia: older patients who can cooperate with the treatment do not need anesthesia; younger patients who cry more than once are given intravenous general anesthesia. In the case of right-sided injury, the patient is placed supine on a hard bed with the affected limb slightly abducted to the side of the body, the operator holds the wrist of the affected limb at 45° of flexion and pulls upward obliquely, the left hand is placed in the proximal segment of the fracture, and the affected limb is held tightly and pulled downward in the reverse direction, simply lifting upward obliquely for anterior-posterior displaced fractures, lifting in the opposite direction for laterally displaced fractures, and pulling in the opposite direction for distally displaced fracture blocks with internal rotation. If the fracture is distally displaced, the forearm is externally rotated (posteriorly) at the same time. The operator’s right hand gradually increases the lifting force (no sudden force) while the left hand maintains antagonistic traction, and when the lifting force increases to a certain level, a clear “click” can be felt under the hand to reposition the fracture, and the C-arm TV X-ray machine checks the fracture alignment. If the pulsation of the radial artery is good, the elbow joint should be flexed 120°. If the swelling is obvious and the pulsation of the radial artery is weakened or disappears due to flexion, the degree of flexion should be reduced. Fixation and rehabilitation After successful repositioning, patients with fractures displaced medially to the posterior are given a plaster brace for external fixation with the forearm rotated forward and wrist extended at 120° of flexion, and patients with fractures displaced outward to the posterior are given a plaster brace for external fixation with the forearm rotated back and wrist flexed at 120° of flexion. Patients who were unable to deep flex the wrist at the time of surgery should be fixed in deep flexion one week after the swelling of the elbow has subsided. During the period of cast fixation, the sensation, activity and blood flow of the extremity should be closely observed to avoid secondary vascular nerve injury and Volkmanns ischemic contracture. After cast fixation, the radiographs should be reviewed weekly. Generally, after 3 to 4 weeks, the fracture end can be released from the external fixation with obvious bone scabs, and functional exercises without weight-bearing can be started for the affected limb. Normal activities can be resumed 3 months after the fracture. The key point of this method is ① gradually increase the lifting force, when the lifting force increases to a certain degree, the soft tissue of the posterior side of the fracture end, such as periosteum and muscle, is completely tense, and the fracture is reset under the action of the soft tissue hinge, when the men feel the obvious sense of reset, the fracture has often been better reset, at this time do not continue to increase the traction force, otherwise it will destroy the soft tissue hinge, resulting in the loss of reset or fracture The stability of the fracture will be reduced. When traction is applied to the posterior cortical contact of the fracture end, 45° traction can make the posterior cortical fulcrum of the fracture end as the fulcrum, and the anterior cortical force can be generated by the action of the soft tissue hinge, so that the fracture can be well repositioned, while traction in the extended position cannot produce this fulcrum effect. ③Avoid multiple reductions as much as possible, unless the residual distal fracture block is inversion or internal rotation deformity, do not make large adjustments to the fracture repositioning, because the post-fracture section is canine interlocked, and the initial repositioning section can be well occluded and more stable, but after multiple repositioning the section will be rounded and blunted, resulting in a very unstable fracture end and easy loss of repositioning. After the repositioning is completed, it is necessary to check whether the displacement of the fracture in the four directions of anterior-posterior, lateral, angular and rotational has been corrected, and the ulnar deviation displacement should not be left behind, otherwise it will lead to elbow inversion and affect the function. The anterior-posterior displacement, lateral displacement, and angular displacement are less likely to be overlooked on imaging and are often well corrected, whereas the rotational displacement is relatively easy to overlook. The rotational displacement of a transverse supracondylar humerus fracture does not cause the fracture end to become angular, while the internal rotation of the distal fracture block of an oblique fracture will cause the fracture to become angular to the radial side, leaving an ulnar deformity, because the supracondylar humerus fracture requires flexion of the elbow joint after resetting to maintain resetting, and when the If the rotational displacement of the fracture is not corrected, this deformity will be maintained until the fracture heals, resulting in inversion of the elbow. The single-person lifting and traction method of resetting supracondylar humerus fractures in children through the action of soft tissue hinge is scientific in principle, quick and simple in operation, and effective, and is suitable for closed resetting of various types of supracondylar humerus fractures, which is worth promoting clinically. If the attempted repositioning of this method fails, then it should be changed to other repositioning methods.