Through the central pull-out test and high temperature test, the influence of different nano-TiO₂ content on the bond performance of reinforced concrete after high temperature was analyzed. The relationship between residual compressive strength and ultimate bond stress damage degree of reinforced concrete with different nano-TiO₂ content after high temperature was discussed. The results show that after high temperature, the addition of appropriate amount of nano-TiO₂ can enhance the bond performance of reinforced concrete and delay the high temperature damage of concrete. However, when the content of nano-TiO₂ exceeds 2% (mass fraction), the bond performance between steel bar and concrete is weakened. The prediction formula of bond strength of reinforced concrete with different nano-TiO₂ content after high temperature is established. The experimental value is in good agreement with predicted value.