Ornamental tree species withhigher capability of bacteria control wereselected from urban forest to conductcomparative studies on their effectivenesson bacterial control by using on-site fieldinvestigation, laboratory analyses ofsamples and statistic analysis. Resultsindicated that Michelia macclurel, SchimaSuperba, Artocarpus nitidus ssp.Lingnanensis, Machilus breviflora,Mangifera indica, Manglietia glauca arebetter in bacteria control, killing more than53% of bacteria, more than 58% of mildew.Optimal deployment of these bacterialresistant trees in urban forest was discussedbased on the obtained results.