Disclosed herein are an extract of Phalaenopsis amabilis petals and the preparation process thereof. Also disclosed is that the extract of Phalaenopsis amabilis petals can be used in promoting skin whitening, enhancing the moisture-retaining capacity of the skin, and preventing and/or retarding skin aging.本發明揭示一種白花蝴蝶蘭花瓣的萃取物暨其製備方法。本發明亦揭示該白花蝴蝶蘭花瓣的萃取物可被用於促進皮膚美白、提升皮膚的保濕能力以及預防和/或延緩皮膚老化。