Abstract: A mixed fiber structure used on a bicycle is provided with a plurality of mixed fiber substructures which are coupled in a parallel manner to one another to form a bicycle part, each of the mixed fiber substructures includes a plurality of two types of fibers which are alternatively arranged in a parallel manner and all extend along an axial direction, between each two neighboring fibers and between each two neighboring mixed fiber substructures is arranged an adhesive layer, and one of the two types of fibers is carbon fiber. The proportion between the carbon fiber and the glass fiber can be adjusted according to the special toughness and strength requirements for specific bicycle parts. Furthermore, the carbon and glass fibers are bonded together by the adhesive layer instead of being woven together, so the manufacturing cost of the present invention can also be reduced.