In this paper, a non-linear finite element approach is used to study the bond-mechanism of steel and concrete at elevated temperatures. The paper describes the various factors governing the bond strength of steel and concrete at ambient and elevated temperatures. The model is capable to account for the reduction in the strength of concrete and steel at high temperatures. The results foam the model show good agreement with published numerical work at ambient temperature. The behaviour of the bond between concrete and steel at elevated temperatures reveal significant reduction of its bond resistance. Predicted results show that the reinforced concrete will attain a total collapse at lower stress levels at higher temperatures in comparison to condition at ambient temperature.