In this paper, the influence of concrete material damage on creep deformation and the damage size in the process of nonlinear creep of concrete are studied. Concrete under long-term load as the research object, from the two aspects of concrete creep and damage ,study the damage deformation of concrete under sustained load, using ultrasonic testing to measure the evolvement rules about the inside damage of concrete,analyzed the time of creep damage when materials under a level high of load, and the correspond to creep deformation, analyzed the influence of creep to concrete materials damage, synthesize that the concrete materials under high sustained load- the effect of creep and damage to each other.