PC/Fe3+?catechol moiety functionalized nano-silica (CFNS? Fe3+) binary composite film materials were constructed by using solution blending method with CFNS? Fe3+ as the reinforcing filler. Scanning electron microscopy, laser particle sizer and Raman spectroscopy were applied to characterize the surface morphology and structure of CFNS?Fe3+. The mechanical properties, thermal stability, micro-morphology of fracture surface, UV?visible light transmittance and surface wear resistance of the composite films were analyzed and evaluated by a universal mechanical tester, thermogravimetric analyzer, scanning electron microscope, UV?visible spectrophotometer, and ball-on-disk tribometer, respectively. The results show that the tensile strength and tensile modulus of the composite film can reach 50.6 MPa and 1022 MPa, respectively, when the addition of CFNS-Fe3+ is 1%; the initial degradation temperature and the maximum degradation temperature can be increased by 5.5 oC compared with that of the pure PC film; and the average friction coefficient of the composite film is 0.30, indicating relatively high wear resistance. In addition, the composite film can achieve effective shielding of UV light while ensuring high transmittance of visible light.