Axial tensile stress strain curve of recycled coarse aggregate concrete(RCAC) was tested on MTS fatigue test machine. Influence of replacement ratio of recycled coarse aggregate(RCA) and curing age on axial tensile stress strain curves of RCAC were analyzed, and tensile constitutive model of RCAC was proposed. The results show that the slope of RCAC tensile stress strain curve on the ascending stage is lower than that of ordinary concrete, and after peak stress the curve droppes steeper with the increase of the replacement ratio of RCA and curing age. Elastic modulus of RCAC is in linear growth with the curing age increasing, and when the load exceeds 50% the deformation modulus of RCAC drop further than ordinary concrete. At the early age, tensile strain at peak stress of RCAC increases with the increase of RCA replacement ratio, the tensile strength growth rate of RCAC is faster than that of ordinary concrete. The tensile compression strength ratio of RCAC reduces with the curing age.