Based on investigations of the spontaneous flora of Feiran Oasis in 1995 and 1996, 70 taxa of vascular plants, 49 dicots and 21 monocots, are listed, of which 33 taxa are recorded for the first time from the oasis. This inventory is compared with herbarium collections and published records of investigations made in the 1930s and 1960s. Considerable changes in the composition of the spontaneous flora of Feiran Oasis in the last 60 years are ascertained and reasons are discussed.