Abstract: In order to obtain the relationship between content of polyester and low-velocity impact performance of HFRP,seven mixed yarns were designed with different contents of polyester and were woven successfully on the modified conventional loom,the HFRP plates were manufactured by the technology of vacuum assistant molding.A calculation formula for fiber volume fraction of hybrid fibers was deduced,the impact damage and the impact energy absorbency of the composites were observed and analyzed.The result indicates that the composites mixed with polyester fibers have a significant hybrid effect.Through prodiction,the absorbed energy will be the highest when the content of the polyester fiber is about 55.69%.In this way,the best energy absorbency of the composite can be gained with the lowest cost.