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