Continuous fiber reinforcement such as CFRP strand has excellent properties such as light weight, high strength, high corrosion resistance and non-magnetic properties. To make effective use of these characteristics, many studies have been conducted on the application of continuous fiber reinforcement as reinforcement for concrete members. An increasing number of cases have been reported in which continuous fiber reinforcement has been used in actual structures in salt-affected environments. However, most of them have been applied as PC tensioning materials, and there are only a few cases where they have been applied to RC structures as a substitute for reinforcing steel bars. In this study, to investigate the applicability of CFRP strands to RC members, RC beams using CFRP strands with different surface properties as the main reinforcement were fabricated and loading tests were conducted. As a result, it was confirmed that the bending stiffness of the beams with CFRP strands was almost the same as that of steel rebar beams with the same axial stiffness. And it was revealed that the ultimate load was increased and the residual deformation after unloading was reduced. In addition, it was confirmed that the surface irregularity of CFRP strands improve crack dispersion of RC beams.