Abstract: Experiments of reinforced concrete (RC) members subjected to combined loading indicated that their tension，bending and shear strength would interact with each other． Based on the theory of tension-bending interaction and moment-shear correlation，a formula checking the bearing capacity of rectangular ＲC member was derived from the balance of sectional force，taking consideration of the interaction of small eccentric tension-shear and large eccentric tension-shear，respectively． Comparing with experimental data，the results calculated by the formula considering tension-bending-shear interaction consisted with the experimental data well． From a security point of view，it was suggested to further modify the design method for the members under combination of tension，bending and shear in Code for Design of Concrete Structures ( GB 50010—2010) ．