This paper is the second one of two that further studies damage mechanisms of T-shape adhesive structure of composite wind turbine blade. Finite element model by considering fluid/solid interaction is established for the local T-shape adhesive structure. Effects of some important factors on damage mechanisms of blade are discussed including the wind velocity, the strength, thickness and width of adhesive layer. Numerical results by fluid/solid coupling analysis are also compared with those by the blade element momentum (BEM) theory. Results show that: (1) damage in the skin and the adhesive layer increases as the wind velocity adds. (2) appropriate increase of the thickness (e.g., 0.1–0.5 mm) and width of the adhesive layer decreases the structural damage to a large extent. (3) two methods produce some difference for damage predictions of the T-shape adhesive structure under high wind velocity. It is recommended that comprehensive considerations should be given to the layup sequence, the adhesive thickness, size and strength, and the selection of material and processing so as to improve damage tolerance and load-bearing ability of structure.