Abstract: Turbine blade of composite material is one of the key components of a tidal stream turbine, and the choice of its structural form is particularly important to blade safety. This paper presents a finite element model that generates regular laminated elements in a top-down procedure to simulate the blades of composite material. This method insures the elements consistent in their local coordinate systems and subsequently leads to consistent principle directions of the composite material of a blade. To implement the model, a set of APDL commands are coded on the basis of ANSYS software. We calculated the strength and stiffness of blade to confirm the thickness of blade layer, the number of layers, and the ply stacking direction of fibers. The model analysis of blade can be applied to blade resonance checking. The results indicate that our approach is effective and applicable and provides a reference for structure design of composite-material blade.