Abstract: In this study,the characteristics of growth and sporulation were observed in 9strains of Trichoderma,and the antagonistic effects of them on the soil-borne Phellinus noxius in Hevea brasiliensis were studied with confrontation culture in vitro.The results showed that HCS,DJ1 and ACCC31757strain grew faster,the average growth rate of which were over 4.5cm per day;ACCC30536strain grew the most slowly,the growth rate was only1.5cm per day.Nine strains demonstrated significant difference in their capacity of inhibiting the growth of Phellinus noxius,and three strains of which could effectively inhibit the growth of Phellinus noxius in Hevea brasiliensis.In the eighth day,the inhibition rate of ACCC31642 and HCS for brown root disease pathogen reached100%,and ACCC31639 reached 93.33%.