Abstract: For recyclable use of the large amount of polyester / cotton，cotton / ramie waste blended fibers, the technology for manufacturing a compound plate with waste PP as resin material and waste polyester / cotton/ ramie blended fibers as reinforcement was designed and optimized. The mechanical properties of the plate including impact strength and tensile strength were tested. The optimized production process conditions were determined by single factor analysis and orthogonal test, and the relationship between technology parameters and mechanical properties was investigated.