In this study,the durability of rubber wood(Hevea brasiliensis) which was thermally treated at 170,185,200,and 215℃for 3 h respectively was investigated.The results showed that the durability of heat-treated rubber wood was improved,and the improvement became more obvious with the increase of the treating temperature. When treated at 185℃or lower temperature,the decay resistance of treated wood had no significant improvement.The lowest weight losses were 21.6%and 6.8%after attack by brown rot fungi(Gloeophyllum trabeum) and white rot fungi (Coriolus versicolor) respectively,which were reached by the specimens treated at 215℃.Their resistance to mold fungi was not improved,but the heat-treated wood performed better than untreated wood when both were painted.In field test,the heat-treated specimens exhibited no advantage in termite resistance compared to untreated. In this study, the durability of rubber wood (Hevea brasiliensis) which was thermally treated at 170,185,200, and 215 ° C for 3 h respectively was investigated. The results showed that the durability of heat-treated rubber wood was improved, and the improvement became more obvious with the increase of the treating temperature. When treated at 185 ° C or lower temperature, the decay resistance of treated wood had no significant improvement.The lowest weight losses were 21.6% and 6.8% after attack by brown rot fungi (Gloeophyllum trabeum) and white rot fungi (Coriolus versicolor) respectively, which were reached by the specimens treated at 215 ℃ .Their resistance to mold fungi was not improved, but the heat-treated wood performed better than untreated wood when both were painted.In field test, the heat-treated specimens show no advantage in termite resistance compared to untreated.