Abstarct: Abstract In recent years, double-skin concrete-filled steel tubular (CFDST) columns have attracted considerable attention in high-rise structures due to their high load-bearing capacity, favorable ductility, and desirable performance. These columns consist of two inner and outer steel tubes, with the space between them filled with concrete. Despite extensive research on the behavior of columns under axial load, fewer studies have been conducted on short thin-walled columns with square and rectangular cross-sections under eccentric loading. The aim of this study is to evaluate the reliability of numerical modeling in predicting the behavior of such columns and to compare the results with experimental data. For this purpose, using a databaxse including the results of 40 tests (20 square and 20 rectangular columns) with variables such as cross-sectional dimensions, load eccentricity, and the width-to-thickness ratio of the tubes, a nonlinear model was developed in Abaqus software to simulate the behavior of CFDST columns under axial and eccentric loading. The results indicated that the numerical model was able to predict the ultimate strength, pre- and post-peak behavior, and failure modes of the columns with high accuracy. The strengths of the model include its high precision and applicability to complex loading conditions. However, in certain cases of severe loading, discrepancies were observed, indicating limitations in fully capturing the detailed behavior. Overall, the developed numerical model can serve as an effective tool for the analysis and optimal design of CFDST columns under various loading conditions and can significantly contribute to the improvement of design guidelines.