The human cervical spine is the most essential support system of the whole body. It consists of vertebras, tissues, facet joints, intervertebral discs and ligaments. The problems in the cervical spine is more frequent, it can be due to accident or increase with the age. The objective of this study is to develop the interbody fusion cage with different porosity size and study the behavior of the cage for the compression loads. The bone graft introduced in the cage will provide osteointegration with the adjacent vertebra. For the biomechanical analysis we created the cervical level cervical 6- cervical 7 and inserted the cage in the functional spine unit and analyzed using finite element analysis for compression loadings. In this study by introducing the semi spherical shape porosity in the inferior and superior surface of the cage will reduce the cage stress and in the same porosity we introduced the bone graft for the better osteointegration. So, the reduced stress in the cage structure will reduce the occurrence of the subsidence and migration of the cage.