为满足科研与生产的需要，基于有限元理论，推导了由现场位移观测值同时确定多种介质材料的物理力学参数的反分析模型。应用该模型进行的算例分析，表明了模型的正确性和有效性，且给出不同的初始值均能收敛到正确值。 In order to meet the needs of scientific research and production, based on the finite element theory, the inverse analysis model for determining the physical and mechanical parameters of a variety of media materials simultaneously from on-site displacement observations was derived. The example analysis using this model shows the correctness and validity of the model, and gives the initial values ​​can converge to the correct values.