Abstract: In order to solve the problem of environmental pollution and resource shortage, the recycled coarse aggregate and recycled fine aggregate were used to prepare the recycled concrete by the waste concrete in the construction waste, and it was prepared by replacing natural aggregate with different replacement ratio in the form of double-admixing. The research results show that, the workability and mechanical properties of the double-admixing recycled aggregate concrete are worse than that of natural aggregate concrete. With the increase of the replacement ratio of recycled fine aggregate and recycled coarse aggregate, the water consumption of the concrete is increased significantly, and the compressive strength of each age is reduced gradually, but the two kinds of properties show a good linear relationship. When the replacement ratio of recycled aggregate is 100%, compared to the natural aggregate concrete, its water consumption increased by 22.1%, the compressive strength decreased by 19.2MPa, and the linear correlation coefficient is above 0.942. In the application of recycled concrete, the replacement ratio of double-admixing recycled aggregate should not be greater than 50%.