Abstarct: The Vibrational analysis of an axisymmetric annular plate under transverse loading has been presented baxsed on the first order shear deformation theory. For the plate with moderately large deformation, the von-Karman relations have been used to define the kinematics of the problem. The constitutive equations are linear and the Hamilton’s principle has been used to extract the motion equations. The governing equations contain a system of coupled partial differential equations with variable coefficients and the perturbation technique has been used for analytical solution. A sensitivity analysis has been performed and the effects of geometrical parameters have been investigated on the results. The results are compared with a numerical method. The response analysis for the simply supported case has been done too.