Polymer modified concrete is produced by combining polymer and cement to increase durability and adhesion of concrete. The presence of polymer leads to formation polymer film and increases the closed pores in concrete, which ultimately results in reducing permeability, compressive strength and tensile strength. In this paper, the effect of unsaturated polyester and vinyl ester was investigated in 3, 5, 8 and 10 percent replacement with cement. The Air content, slump, compressive strength, tensile strength, water absorption, energy absorption, and failure mode are the experiments carried out in this study. The tensile strength reduction rate is less than the compressive strength due to better polymer performance in tension. The performance of vinyl ester polymer in resistance is better than unsaturated polyester. This mention issue caused the strength reduction. In 3, 5, 8 and 10 percent replacement of polymer with cement, respectively reduces the compressive strength by 10, 19, 26 and 13 percent. Also, for mentioned replacement percent, 2, 11, 19 and 24 percent reduction in tensile strength was achieved. Also, the amount of water absorption in samples containing unsaturated polyester was about 0.2 to 0.4 percent less than that of vinyl ester. By adding polymer, the fracture line of cube samples tended to parallel direction of loading. But the failure mode in vinyl ester samples is higher than those sample. The fracture line of cube samples, with the addition of polymer, tended to roughly parallel to load. But the failure rate in vinyl ester samples is far higher. In cylindrical samples, the length of the fracture lines increased with the increase of the polymer, and their number was lower than the control concrete.