Abstract: This paper deals with the changes of the MOR and MOE of OSB in acc-elarated-aging tests and the influence of resin content on durability of OSB. The results showed thate MOE and MOR in parallel divection decreased more than in perpendicular direction; With increase of PF resin content, the durability of OSB was built up, but UF resin content had little effects on OSB durability; ASTM aging test method was only suitable for PF OSB.