The spider fauna of Namhai Island was investigated from 21 to 25 Aug 1998. As a result,81 species of 43 genera under 15 families were collected. Identified spiders are composed of 30.8% Palaearctic, 28.4% Palaearctic and Oriental, 6.1% Holarctic, 2.4% Oriental, and 3.7% Cosmopolitan species. Araneid, salticid and theridiid spiders appeared to be dominant among the spiders. Common species with Japan and China were 56(69.1%) AND 55 (67.1%) species, respectively.