本文在深入分析燕山地区区域地质背景和地壳表层结构的基础上，确定了中生代构造形变平衡剖面计算的准则和主要滑脱层，对区内３条主要构造剖面进行了平衡计算，并运用各种尺度的多种应变测量数据对计算结果进行了有效核查，得出燕山造山带印支期ＳＮ方向缩短率为２７．９％，燕山期缩短率为１０．９％，较为准确地描述了燕山造山带中生代构造形变的面貌 Based on the in-depth analysis of the regional geological background and the crustal surface structure in Yanshan area, this paper determined the criteria and major detachment strata for calculating Mesozoic tectonic deformation profiles and calculated the balance between the three major tectonic sections in the area, The results show that the Yanshan orogenic belt has a shortening rate of 27.9% in the Indosinian period and a shortening rate of 10.9% in the Yanshan period, which can accurately describe the Yanshan orogenic belt Mesozoic tectonic deformation of the face