In recent years, the use of Concrete Filled Steel Tube columns is increased significantly in medium-rise to high-rise buildings, therefore to understand the deformation characteristics of Concrete Filled Steel Tube columns critically Over Reinforced Concrete Columns, Extended Three Dimensional Building System ETABS Software is used. This paper focuses on a comparative study of Concrete Filled Steel Tube columns over Reinforced Concrete Columns under axial compressive loading. Two kinds of columns, including CFST column with varying size and conventional column were tested. The experimental results showed that the CFST column has a higher bearing capacity, more effective plastic behavior, and greater stiffness.