A study on the structural performance tensioning air beam system(TABS) is presented. TABS which consists of air beam and cable strut is a light weight structure system and hybrid system. Several researches which concerned to tensioning pneumatic structure reported in recent year, especially "Tensairity" is representative of tensioning pneumatic structure. In "Tensairity", compression and tension are physically separated. Low pressure compressed air is used for pretensioning the tension element and for stabilizing the compression element against buckling. Previous researches of "Tensairity" show structural ability of a typical air pressure beam. Therefore, there is necessary to make an interrelation between air pressure and structural abilities of tensioning air beam qualitatively. In this study, a number of specimens were tested with different air pressure condition. In order to prove the structural properties of TABS, an efficient computational analysis was performed.