It is found that the vegetation of Soko Islands has a strong secondary characteristic and shrublands are the main vegetation type,accompanied by secondary evergreen broad-leaved forests,beach vegetation and a small number of semi-mangroves.Shrubs and herbs both are of high diversity.259 vascular species in 207 genera of 85 families are found,including 245 native wild species.And 2 species are listed to be protected by Chinese government or government of the Hong Kong Special Administrative Region.As an important part of the flora of Hong Kong,the flora there is dominated by tropical elements,with more than 50% families,94.69% genera and 83.40% species distributed in tropical area,and is similar to that of Neilingding Island nearby.However,each island has its own characteristic in vascular plants biodiversity,depending on its area,altitude,degree of isolation and human activities on it,and Tai A Chau and Siu A Chau have the highest biodiversity.