In this study, a horizontal axis wind turbine (HAWT) blade with 1 kW power output has been designed for Technological University (Thanlyin) and the blade aerodynamics are also simulated to investigate its flow structures and aerodynamic characteristics. As the technology of wind power generation is improved; the blade of wind turbine is becoming the main sector for perfect and effective design. The designed wind turbine blade should have enough strength, stiffness, elasticity, hardness and stability. Therefore, modeling and strength check of wind turbine blade is very important for the designing of wind turbines. This paper purposes to express the design calculation and strength check of HAWT blade. In this paper, the selection of airfoil shape from NACA series was done by using Comsol Multiphysics software and the 3D model of blade was proactive by using Design Foil and SolidWorks software. Finite element analysis on the blade was done in SolidWorks. The numerical simulation for strength check was done by investigating the Von Mises Stress distribution over the blade.