Specimens collected from the field and those preserved in herbaria were examined, and the family Rutaceae of Taiwan was revised. The family had 13 genera, 31 species and 4 varieties, including three new status: Glycosmis pariflora var. erythrocarpa, Skimmia japonica subsp. distincte-venulosa and Skimmia japonica subsp. distincte-venulosa var. orthoclada. A key to the species and varieties of Rutaceae in Taiwan was provided and notes on their habitats and distribution were given.