Abstract: To study the creep effect on steel reinforced concrete beam, a mathematic model of creep function was developed, then some analytic models based on visco-elasticity theory were given to the computation procedure of creep effect, such as the bearing capacity, strain variation, deformation and interface slip. Results of the computation along the whole span of SRC beam showed that the values of mid-span moment, strain and deformation are maximum, while the mid-span slip value is minimum. During the initial stage of loading, the values of all these parameters change obviously, and later on they approach to constant.