Two species of Bolbitidaceae are reported as new records from Hainan Island, China. They are Bolbitis hekouensis Ching and B. angustipinna (Hayata) H. Ito. The new distribution site and some description of B. hainanensis Ching et C. H. Wang were added. All the voucher specimens in the present paper are preserved in Herbarium of South China Botanical Garden, the Chinese Academy of Sciences.