The moisture diffusion coefficient of bamboo timber during hot-pressing drying was measured and analyzed by a non-balance method and the effect of temperature on the moisture diffusion coefficient was evaluated.The results showed that the moisture movement was mainly controlled by both temperature gradient and moisture gradient.The higher the drying temperature was,the bigger the moisture diffusion coefficient was at every drying stage.The moisture diffusion coefficient was increased at the early drying stage when the moisture content was high,and hit the maximum value when the moisture content drew close to the fiber saturation point,and then decreased gradually as the moisture content decreased.