Abstract: A method based on the mechanical transformation model is proposed to analyze the punching shear capacity of slab-column connections, which can transform the problem of elasticity into one of the structural analysis. The method can be realized by the computing platform OpenSees, and the key parameters of the model can be determined and validated through a comparison between the numerical simulation and experimental results. The results show that the proposed numerical method can simulate well the punching shear capacity of slab-column connections in terms of load-deformation curve, stiffness variation and distribution of deflection. A new approach can be used to study the mechanism, the mechanical characteristics and the distribution of internal forces, and provide a theoretical basis for design and practice.