Abstract: Research on the adaptabilities of sereral mangrove species and Taxodium distichum on deep-water mudflat showed that (1) the growing speed and survival rate of mangrove species Sonneratia apetala were close to that of Taxodium distichum, greatly higher than that of Aegiceras corniculatum, Kandelia candel and Bruguiera gymnorhiza, proving that Sonneratia apetala and Taxodium distichum had a strong growth adaptability on deep-water mudflat and fast-growing characteristics; (2) with the decrease of the mudflat height, the survival rate and growing speed of mangrove species and Taxodium distichum decreased accordingly. Taxodium distichum grew poorly and few surived under mudflat height of -0.9 m,and all the mangrove secies could not even survive.The ability of Taxodium distichum to endure sea water inundation was the greatest,next was Sonneratia apetala,Aegiceras corniculatum was poor,and Kandelia candel and Bruguiera gynnorhiza were the poorest;(3) there existed certain correlations between growth indexes of mangrove species and Taxodium distichum at the same place. The correlations between Sonneratia apetala and Taxodium distichum were most remarkable, almost every growth index of Sonneratia apetala had especially notable correlation with that of Taxodium distichum. Aegiceras corniculatum,Kandelia candel and Bruguiera gymnorhiza had relatively poor growth correlations with Taxodium distichum.