The load conditions of radial spherical plain bearing in the work of loader are sum up by the analysis of structural and loading character of radial spherical plain bearing in loader hinge joint.Finite element calculation model of radial spherical plain bearing is founded and its stress distribution graph in every working condition is calculated right and quickly by interface between HyperMesh and ANSYS.The result of finite element analysis is the same to the message from market feedback.It is powerful to improve validity of analysis.The result of analysis is useful as reference for design and improvement of radial spherical plain bearing in loader hinge joint.