The　change　in　strain　of　T300/AG80　carbon　fiber　composite　laminated　plates　were　tested　under　laser　irradiation.　The　strain　in　three　directions　of　0°,　45°　and　90°　of　the　samples　under　laser　beams　with　various　radii　were　recorded　by　the　dynamic　strain　testing　apparatus.　With　the　effects　of　temperature　eliminated,　the　presented　data　show　that,　the　strain　decreases　with　the　increase　of　the　distance　to　the　center　of　laser　spot.　After　the　laminates　are　irradiated　for　5　seconds,　the　maximum　strain　is　found　in　the　direction　of　90°　and　is　at　least　1.5　times　larger　than　the　minimum　strain　in　the　direction　of　0°.　The　thermal　stress　at　every　point　decreases　as　the　distance　to　the　spot　center　increases.　The　experiment　process　was　simulated　with　finite　element　analysis　software,　which　shows　that　the　maximum　relative　error　caused　by　temperature　is　16.9%.