Abstract: In this paper, the structural safety of the upward-moving formwork system, the most dangerous sections of the inner and outer formwork under critical working conditions were selected, and the finite element model of the inner and outer formwork was established by using ANSYS for simulation analysis, and the plate and shell elements were used to simulate the steel panel part, and the beam element was used to simulate the frame beam system. In terms of applying loads, the characteristics of concrete pouring operations are taken into account. After the strength and stiffness of the steel plate shell and frame beam of the inner and outer formwork are checked, the stability of the compression support rod of the inner and outer formwork is further checked. The study confirms the structural reliability of the formwork system under extreme construction loads, and provides a theoretical basis for the safety assessment of mobile formwork.