Abstract: Nanometer-sized titanium doixide films prepared by hydrothermal precipitation method were first immobilized on the surface of polyamide fibre using tetrabutyl titanate, and then dyed with Remazol Brillant Blue R-X. Scanning electron microscope (SEM), X-ray diffraction (XRD), infrared spectroscopy (IR), differential scanning calorimetry (DSC) and thermal gravimetric (TG) analyses were used to characterize the morphology, crystalline phase, chemical structure and thermal stability of titanium doixide coated fibre. The properties of reflectance spectrum, tensile, water absorption, K/S value and color fastness for polyamide fabric were measured. It was observed that when polyamide fabric was treated with tetrabutyl titanate aqueous solution at 120 ℃ for 5 h, pure anatase nanocrystaline titanium doixide particles of average size 10 nm were synthesized, and adhered onto fibre surface by means of physical mode. As compared with the untreated fabric, the onset decomposition temperature of TiO2-coated fabric decreased. The capability of against ultraviolet radiation was improved. The breaking load and tensile strain in warp and weft directions increased to some extent due to the shrinkage of fabric size. The water absorption changed a little. The color yield (K/S value) decreased slightly, but then increased after being washed with water. The color fastnesses to rubbing did not change. The K/S values of TiO2-coated fabric irradiated by ultraviolet ray at different time decreased slowly compared with that of untreated one.