By using the Finite Element Method (FEM)，the nonlinear thermal vibration characteristics of composite laminated plates under linear temperature field were investigated. Based on the eigenvalue buckling analysis method, the bifurcation point of an ideal linear elastic structure was estimated. And the critical buckling temperature distribution and the lowest nature frequencies of composite laminated plates with different layers and orientations were also calculated and analyzed. Moreover, the general regularities of temperature effect on the thermal vibration characteristic of the composite plate structure were summarized. All these conclusions will give guidance on structure design and heatresistant design.