Lightweight thermal protection materials and strain isolation pad were used as the thermal protection system of reusable launch vehicle.The lightweight thermal protection component was bonded to the surface of the carbon fiber composite skin by the silicone rubber adhesive.In order to improve the bonding quality of lightweight thermal protection system for reusable aircraft，influnence of pressure，pressurizing time and surface treatment on the bonding strength of lightweight thermal protection components and carbon fiber composites were investigated experimentally.The results show that the bonding strength of lightweight thermal protection components and carbon fiber composites increase with the increase of pressure. The bonding strength increases rapidly with the increase of pressurizing time，but the increase rate slow down when the pressurizing time exceeds 7 h.The bonding strength is improved by grinding rough bonding surface or applying treatment agent.The bonding strength is increased by more than 52%， when the two processing methods are applied at the same time.