Effect of tempering heat treatment at the range of 500670 ℃ on the interface microstructure and mechanical properties of hotrolled titanium clad steel plates were investigated to provide guidance for the formulation of process parameters for hotworking of clad plates. By applying tensile, impact and shear tests, the mechanical properties of rolled and tempered titanium clad steel plates were measured. And the interface microstructure, morphology and reaction phase of shear specimens were characterized by optical microscopy, scanning electron microscopy and Xray diffraction. The results showed that the shear strength of titanium clad steel decreased after tempering treatment, and decreased with the increase of tempering temperature. The reaction phases of hotrolled and tempered titanium clad steel plates were both βTi and TiC, and the thickness of TiC reaction phase increased with the rise of tempering temperature. The increase of TiC brittle phase thickness resulted in the degradation of shear strength, and the shear fracture had a tendency to increase brittle fracture, and the tear feature was weakened, showing obvious smooth characteristic.