In recent days, due to the expansion of cities it is required to construct the high storey buildings. Composite buildings prove to be promising for multi storey building. As a result, composite columns have recently undergone increased usage throughout the world, which has been influenced by the improvement of high strength concrete enabling these columns to be considerably economized. Columns are designed to resist the majority of axial force by concrete alone can be further economized by the use of thin walled steel tube. The paper discusses about the behavior of the composite column and various codal provisions. Experimental research carried out by comparative study between experimental results and analytical results for hollow steel tube (HST) and concrete filled steel tubes (CFST) under axial compression. To compare the experimental results of CFST with AISC-LRFD 2005 and Eurocode-4. The investigation is carried out on HST & CFST specimens of Rectangular cross section with three different sizes. The grade of concrete used for infill concrete is M20 and M40. The tests on said CFST specimens are carried out with the help of compression testing machine. The axial load is applied gradually on specimens. This paper presents the details of study carried out and the conclusions arrived.