论述深基坑支护体系计算中考虑桩土共同作用原理, 因而引起变形土体侧压力的改变, 并根据工程实践结果, 提供了经过监测与验证的主要结论. This paper discusses the joint action principle of pile and soil in the calculation of the deep foundation pit support system, which causes the change of side pressure of the deformed soil body. According to the engineering practice results, it provides the main conclusions of monitoring and verification.