An assessment of the present status of spider (Araneae) from caves in Ha Long Bay was undertaken. A total of 22 species from 14 families are known from 3 typical caves in Ha Long Bay, Quang Ninh province. Of the species collected, there are 8 species are regarded as true cave spiders (troglobites), while 6 are troglophiles, found both inside and outside caves. The rest of the species (8) are cave accidentals and they are found mainly around the entrances. The distribution of cave spiders discussed in the paper.