Abstract: Based on the generalized thermoelasticity with twothermal relaxation times (G-L theory), the mechanical parameters through thezero-impedance interface in a laminated plate under transient thermal shock,such as the displacement, stress and temperature, are studied by using thefinite element method. The displacement, stress and temperature near theinterface of the composite plate are obtained. With the influence ofspecific heat capacities, heat conduction coefficients, thermal relaxationtime and densities of two materials, it is found that the displacement andstress through the interface of composite plate has a sudden change. Theresults are useful to obtain the deflection of composite plate caused byheat.