A partial hybrid stress method for orthotropic composite plate analysis is presented here by using a finite element formulation. A modified Hellinger-Reissner principle is used for the derivation of the governing equation. The flexural stress components are separated from the transverse shear stress components so that the continuity of the interlaminar stress is enforced in the transverse shear stresses only. This continuity of interlaminar stress is assumed by generalized function that satisfies the continuity condition for any number of layers and any thickness ratios of the layers. Up to third-order displacement assumption is made through the thickness direction. The result of this method shows exact agreements of the interlaminar continuity conditions in the transverse shear stress.