We investigated and analyzed the new community of B.gymnorrhiza(L.) Lamk,Rhizophora stylosa Griff and Brugiera sexangula(Lour)Poir which were sixteen years old and transformed from the secondary shrub forest of Aegiceras comiculatum Blanco. The results show that three kinds of mangrove plants all can settle in the Aegiceras comiculatum Blanco shrubs community,and B. gymnorrhiza(L.) Lamk have the maximum stem and higher growth rate.The appropriate forestation density for Rhizophora stylosa Griff and Brugiera sexangula(Lour)Poir is 1m×1m or 0.8m×0.8m,and 1.5m×2m is suitable for B.gymnorrhiza(L.) Lamk.The density of Aegiceras comiculatum Blanco was declining in varying degrees after introducing the B.gymnorrhiza(L.) Lamk,Rhizophora stylosa Griff and Brugiera sexangula(Lour)Poir sixteen years ago,and introducing of the B.gymnorrhiza(L.) Lamk is worst for the growth of the the secondary shrub forest of Aegiceras comiculatum Blanco.The biomass of Rhizophora stylosa Griff and the total biomass of community was more than the total biomass augment of the Aegiceras comiculatum Blanco community.The biomass augment of Rhizophora stylosa Griff was most,and it was 0.9 times more than the total biomass of Aegiceras comiculatum Blanco community. Brugiera sexangula(Lour)Poir and B.gymnorrhiza(L.) Lamk both have good renewal states,especially there was more than two plants seedlings/m² in the Brugiera sexangula(Lour)Poir community.It indicates that Brugiera sexangula(Lour)Poir community was on the point of maximum development,and it can predict that mangrove community would resurge about fifteen years in the future.