Abstract:Three endophytic bacterium strains XG32 (Pseudomonas fluorescens biovar Ⅳ), DLJ1 and DP24 obtained from plants were tested. Three tests, such as soaking capsicum seeds, irrigating capsicum seedlings and controlling pepper Phytophthora blight, were adopted. The results indicated that root and hypocotyl length can be promoted when the seeds were irrigating with the three strains. Plant height and fresh weight were boosted 30% than control when capsicum seedlings were irrigated. Effect of disease control was increased when seedlings were inoculated. Moreover, these strains can also reduce harmful effects of toxin of Phytophthora capsici on plants in certain extent.