Abstract: To calculate the deformation and punching shear capacity of a slab-column connection with corroded steel bars efficiently and accurately, a load-deflection curve computational model was established by the basis of the plate and shell theory. The computational model in this study can be used to calculate the deformation, cracking load, and punching shear capacity of the corroded slab-column connections. The test results of slab-column connections were compared with the calculation results of the computational model in this study and different standards. The results show that: the computational model proposed can predict the load-deflection curves, cracking loads and punching shear capacity of slab-column corroded connections accurately; compared with the punching shear capacity calculated by ACI 318−19, GB 50010−2010 and CSA A23.3−14, the computational model proposed has better calculation accuracy.