The study of the pelvis trajectory during human walking has an important science significance and applied value in the fields of medical treatment, physical training, rehabilitation, anthropology, astrionics, man-machine engineering and so on. 人行走时骨盆运动轨迹的研究在诊断患者病情、评定康复效果、识别特殊步态等医疗、体育、康复、人类学、宇航、人机工程等诸多领域均有重要的科学意义及应用价值。