Objective To explore kinematic characteristics of the spine and pelvis for adolescent idiopathic scoliosis ( AIS) patients with different scoliosis curves during standing and walking, and provide reference suggestions for body training in rehabilitation. Methods The thoracic and lumbar angles, as well as pelvic rotation and pelvic tilt parameters of 45 patients with single curve, 45 patients with double-curve and 27 healthy adolescents were measured in standing position and during walking by using Diers 4D motion module. Results The thoracic angle (40. 67°) and lumbar angle (39. 68°) in healthy group in standing position were the largest, the thoracic enlargement angle (6. 1°) in double-curve group was the largest, and the thoracic enlargement angle (-10. 37°) in healthy group was the smallest. The rotation direction of the pelvis in scoliosis group was the same as that of the main curve, and the direction of the pelvis in single curve group was the same as the main curve. Conclusions Compared with the standing position, the motion trend of the thoracic angle in three groups during walking was mainly reduced, and affected by the scoliosis curve. The lumbar angle decreased in three groups. The three-dimensional (3D) pelvic morphology of scoliosis groups in standing position was affected by compensatory curve of the lumbar, and the dynamic rotation function of the pelvis was related to compensatory curve of the lumbar and initial position of the pelvis during walking. It is suggested that therapists should fully consider the potential impact of scoliosis curves on the results when evaluating and training the patient’ s pelvic function, and provide targeted relaxation and functional training on the side with insufficient pelvic mobility to improve the symmetry of pelvic motor function.