Abstract:The results showed that 5％ carbendazol and 75％ thiophanate methyl were able to inhibit the growth of Trichoderma viride at the concentration of 0.5mg/L．Moreover,50％ carbendazol showed less effect on the growth of Xianggu mushroom (inhibitory rate was 7.69％) at the same concentration．The water decoction of Phellodendron amurense was able tO inhibit the growth of T．viride significantly．Compared with using 50％ carbendazol．75％ thiophanate methyl and ger-micide of P．amurense alone，the compound of P．amurense，carbendazol and thiophanate methyl was more effective to inhibit T．viride．