In order to study the degree of influence of the maximum size of recycled coarse aggregate on the bending and tensile strength, compressive strength and folding ratio of recycled concrete, four groups of recycled concrete prismatic specimens (100 mm×100 mm×400 mm) and four groups of cubic specimens (100 mm×100 mm×100 mm) were prepared by using different volume combinations of the recycled coarse aggregate with maximum sizes of 10, 15, 25, and 31 mm under the same mixing ratios and the bending and tensile strengths and compressive strengths of the recycled concrete specimens of the various groups were obtained through tests. The results show that under the same water-binder ratio, the flexural strength and flexural-compression ratio of recycled concrete decrease with the increase of the maximum particle size of recycled coarse aggregate, while the compressive strength increases first and then decreases with the increase of the maximum particle size of recycled coarse aggregate.