Abstract: Superior and fast-growing mangrove tree species Sonneratia apetala Buch-Ham was introduced to Hainan Island and Shenzhen mangrove zone(19°38′～22°32′N) of China in 1985 from Sundarban mangrove zone,southwest of Bangladesh and has normally blossomed and borne fruit.The weight of one-thousand-seed is 14.41～14.88 g,seed germination percentage 90～96,and one-year-old seedlings more or less than 1.5m.Growing in adaptable habitat in Hainan mangrove zone,the mean height of five-year-old trees is 9.2m,the mean DBH of that 12.9cm,39.4% and 26.5% higher than that of indigenous dominant tree species S.caseolaris (L) Engl respectively;the mean height of 2.5 year old young trees is 5.3m and that of best growing tree is 6.2m at Shenzhen mangrove bay in Guangdong Province.Its cold resistance is obviously stronger than that of all indigenous species of the same genus distributing in China and it has the similar adaptability as them to mudflat,tidebelt height and salinity.So S.apetala has remarkable potentiality and promising prospect in China.