After hundreds or even thousands of years of natural, human and material degradation, the structural elements of wood buildings and the bowpieces of corbel bracket nodes have suffered different degrees of damage. These wood parts often need to be repaired. The modulus of elasticity under static bending conditions is a significant factor that needs to be considered when selecting materials for the repair of wood buildings. In order to find a more suitable material for reinforcing or repairing ancient buildings, a bending residence test is developed for evaluating the radial, tangential and slant directions of five types of wood. A mechanical testing machine and a selfdeveloped force sensor were applied to record the correlation between the stress and displacement of the five types of wood using a resistance strain gauge. From the correlation between load and displacement, the modulus of elasticity in static bending can be calculated separately. Through measurement and analysis of the five types of the modulus of elasticity in static bending of wood, the change of density can be compared by the same moisture content of the modulus of elasticity in static bending of wood. The results show that the same wood can have significantly different values of static elasticity bending when bent at different directions. The larch has the highest average modulus of elasticity when bent in different directions,compared with other woods tested. It was also found that the higher the wood density, the higher the modulus of elasticity in static bending.This test results provide the references for the maintenance,reinforcement and alternative replacement of the timber structures.