The purpose of this study is to apply bamboo fibers to biodegradable resin matrix composites, the so-called “green” composites, preferably in place of practical engineering plastics. Press forming and injection molding were used for fabrication of the composite. The result showed that the composite by press forming was 36.2 MPa in tensile strength and 5.91 GPa in Young’s modulus. The composite was also compared with the composite fabricated by injection molding. The latter indicated about a half in both strength and modulus, because bamboo fibers were damaged during fabrication by injection molding and largely decreased in length.