In this paper, polyamide (PA) woven fabric was used as the base fabric, and polyurethane (PU) solution containing silica nanoparticles (PU@SiO2 NPs) was used as the coating solution to prepare composite tent fabric (PA /PU@SiO2 ). The morphology, structure, and durability of the tent fabric under ultraviolet ( UV) radiation, waterstained, or thermal conditions were investigated. The results show that compared with PA / PU fabric without SiO2 NPs, when the mass fraction of SiO2 NPs in PU coating is 5%, the air permeability of PA / PU@SiO2 fabric decreases from about 7. 5 to 6. 0 nm / s, while the reflectivity to UV-visible light is significantly improved. The surface wettability decreases, as indicated by the average water contact angle (WCA) on PA / PU@SiO2 remaining stable at 47° after 9 min. After thermal treatment, the PA / PU@SiO2 fabric shows superior mechanical stability. The degradation rate of the tensile strength is only 6. 3%, approximately half that of the PA / PU fabric. Meanwhile, the elongation at break increases to 98. 9%, compared to 61. 8% for the PA / PU fabric.