Three mangrove tree species Rhizophora apiculata,Bruguiera sexangula and B.gymnorhiza were introduced from Hainan Island to Qi'ao-Dangan Provincial Nature Reserve.All species showed better growth during the seedling stage.At one-year-old,the average seedling heights of R.apiculata,B.sexangula and B.gymnorhiza were 45.3 cm,28.7 cm and 56.7 cm,respectively,the average seedling diameters were 1.34 cm,0.64 cm and 1.60 cm,respectively,and the preserving rates were 40.9%,59.5% and 70.5%,respectively.Through the comprehensive evaluation,the cold resistance of three species ranked in the order of B.gymnorhiza>B. sexangula>R.apiculata.These three mangrove species can adapt to natural conditions of the introduced area,but their growth and development properties need further survey.