Abstract: The theoretical analysis results of the aluminum ribbed cross-ribbed formwork are in good agreement with the finite element analysis results. The simulation results have certain reliability. Then the ANSYS finite element software was used to simulate the three-dimensional finite element simulation of the aluminum alloy formwork pull-tab system and several modified wall molds under the load of construction. The calculation results show that the large values of lateral deformation and bending stress appear in the middle and lower part of the wall mold. Adjusting the size and spacing of the longitudinal and transverse ribs can effectively change the force deformation characteristics of the wall mold during construction and better ensure the pouring wall. The three improved schemes reduce the maximum lateral deformation of the wall mold to varying degrees under the premise of a small increase in the material (not more than 10%). The maximum lateral deformation value of the improved scheme 3 is reduced by 65.25% compared with the existing wall mold, which is the best improvement scheme.