This poster mainly discussed the mechanical properties of glass fiber/basalt fiber reinforced polypropylene hybrid composites which were made through a new method called the direct fiber feeding injection molding (DFFIM) process. The DFFIM process means that continuous basalt fibers were directly feet into the barrel of injection molding machine while using the glass fiber/ polypropylene pellets to make composites materials. The basalt fibers were fed into the melt polymer by the shearing motion of the screw of injection molding machine during plasticization process. Thus, the fiber attrition during extrusion will be eliminated. This is a fundamental industry change and it eliminates the compounding step and the cost of reinforcing compounded pellet, so it could low the cost of making fiber reinforced polymer composites. Then, fiber orientations in the composites which made by DFFIM process were also tested to evaluate fiber dispersion state in composites. The effect of the basalt fiber in GF/hybrid PP composites was discussed based on the mechanical properties testing results which including tensile properties, three-point flexural test, Izod impact test and single edge notch tensile test. And the scanning electron microscope was conducted on the fracture surface of the tensile tested specimen to see the cross-section morphological to know failure mode of composites. It could also see the interfacial bonding between fiber and polypropylene in hybrid composites. Additionally, the fiber volume fractions and residual fiber lengths of both glass fiber from GF/PP long fiber pellet and basalt fiber from direct roving feeding method were investigated and analyzed.