The authors conducted a series of experiments to evaluate durability of Pinus massoniana wood samples treated with preservatives containing propiconazole, tebuconazole and copper triazole by field stake tests, respectively, in Beijing and Guangzhou. The results showed that for the propiconazole and Tebuconazole（PT） treated wood samples, decay ratings at retention of 0.4 kg/m,3, were around 9.5 in Beijing after 9 years, while the stakes by the same treatment were almost destroyed by decay or termites after 7 years in Guangzhou. It proved that the PT treated wood could be used only in above ground circumstances. For the copper triazole treated wood samples, decay ratings were all 10 after 9 years; and the termite ratings were above 8.3 for CuPT treated wood samples at retention of 2.15～3.57 kg/m,3, and 4.3～6.7 for CuTEB treated wood samples at retention of 2.19～3.35 kg/m,3,. It proved that the CuPT treated wood could be used both in exterior ground contact and above ground circumstances.