Abstract: In this paper the stress and deform ation in a orthotxopic hybrid laminated beam are studied.The laminated beam consists of some nonhomo-geneous sub-layers,the elasticity of which is significantly different.The shear theory is applied to each sub-layers and the perfect bonding is assumed in the interface batween adjoining sub-layers.In this paper,a set of second-order ordinary differential equations with respect to the unknown rotation angle of each sub-layer is established.Solving the differential equations,the displace ment and stress can be analytically obtained.The stress in component materials can be determined by use of the effective modulus theory and global-local method.