本文采用二维有限元法对近、远中支托设计的末端游离缺失可摘局部义齿模型进行垂直载荷条件下的应力、位移分析研究．结果表明在同一加载条件下，设计近中支托时基牙牙周支持组织及基托下软组织的应力、位移值明显减小，基牙受力趋于轴向：基托下软组织的应力、位移值大于基牙牙周支持组织应力、位移值．本实验从生物力学角度论证近中支托在修复末端游离缺失的优越性 In this paper, two-dimensional finite element method for near and far Zhongwan design end free removable partial denture model under vertical load stress and displacement analysis. The results show that under the same loading conditions, the stress and displacement of the soft tissues in the periodontal support and the soft tissue in the abutment are significantly reduced when the design of the mesiodistal support is made. The abutment force tends to the axial direction: the stress of the soft tissue under the abutment , The displacement value is greater than the periodontal support tissue stress, displacement value. This experiment from the biomechanical point of view near the Zhongzhong support the superiority in the repair of distal free deletion