Two new species belonging to the CANCELLARIIDAE are described from Taiwan and assigned to the genus Microsveltia. These new species, Microsveltia chinhuii n. sp. and Microsveltia radii n. sp., distributes in deep water off Taiwan ranging from the Pratas Islands in South China Sea and to East China Sea off Keelung. Both new species are white, slender and ornamented with sharply angulated and strongly elevated and rounded axial ribs. Microsveltia chinhuii n. sp. is the largest species in Microsveltia.