Abstract: To understand the effect of inorganic particles (IP) on the mechanical properties of polyamide 6/carbon fiber (CF) composites, the polyamide 6/IP and polyamide 6/IP/CF composites were prepared by melt-extrusion and laminated molding, respectively. The effects of morphology and content of IP on the properties of the composite were investigated by means of field-emission scanning electron microscope and universal testing machine. The results indicated that the composites achieved optimum mechanical properties at the talcum content of 10 wt%, and their bending strength, shear strength and impact strength reached 374.6 MPa, 58.7 MPa and 76.9 kJ/m2, respectively. The composites also obtained excellent mechanical properties at the content of glass beads of 15 wt%, and their bending strength, shear strength and impact strength reached 404.4 MPa, 66.7 MPa and 86.5 kJ/m2, respectively. Compared to talcum powders, glass beads could generate a much better reinforcement effect and resulted in better comprehensive mechanical properties for the composity.