An aircraft window frame preform manufacturing method with braided fabric or multi-axial warp knitted fabric was proposed. The tensile, bending, and compressive properties of chopped composites, braided composites, and multi-axial warp knitted composites were compared to confirm the mechanical property of braided or multi-axial composites in order to see if they perform better than that of chopped composites. In cases involving a 60% fiber volume fraction, the mechanical properties of the braided composite were 1.8 or 2 times higher than those of the chopped composite.