The decay performance of tebuconazole and propiconazole treated wood samples was evaluated by laboratory sand block test and filed stake test.The result of laboratory test showed that there was no significant difference of anti-fungi performance between TEB and PPZ.The rational retention of TEB and PPZ was no more than 240 g/m3.When ratio by weight between TEB and PPZ was 1:1,the rational retention was as lower as 180 g/m3.The decay resistance of triazole in different formulations had nearly no difference.The result from field stake test showed that the decay index was above 9.0 of TEB treated masson pine at the retention of 240 g/m3 after 3 years in Guangzhou,and termite index was above 9.2 of masson pine treated by TEB with deltamethrin,when the retention of deltamethrin was above 8.9 g/m3.