Reed is considered a useful ingredient for structural materials from the viewpoint of sustainability as well as its high tensile strength. In this report, for the aim of verifying the practicality of Reed-made Strand Board (RSB), we produced the small prototypes and discussed the basic performance focusing on the relationship between the parameters related to the manufacture, such as the length and orientation angle of strands, and the out-of-plane bending performance. As a result, RSB has a effective correlation between the manufacturing parameters and the bending properties and satisfies the required performance adequately.