The purpose of this paper is to determine mechanical properties of Basalt/Epoxy composites. Test samples were unidirectional composite samples which they are tested according to ASTM D790-96 standard test method by a universal testing machine. Ultimate strength, modulus of elasticity and fracture energy of bending samples are gained. Then pay attention to conditions of unidirectional samples and doing tensile tests on samples, transition coefficients to transfer bending properties to tensile and compressive properties are gained. Using bending test results tensile and compressive properties of samples consist of strength and modulus of elasticity are derived.