The present invention discloses weight-losing traditional Chinese medicine powder and a preparation method thereof, and belongs to the technical field of traditional Chinese medicines. The weight-losing traditional Chinese medicine powder comprises the following raw materials: ginseng, garden balsam stem, Chinese wolfberry fruits, radix rehmanniae preparata, Chinese angelica, folium artemisiae argyi, peach kernels, saffron crocus, rhizoma chuanxiong, mint, pseudo-ginseng, ganoderma lucidum spore powder, caulis spatholobi, rhizoma curcumae longae, radix achyranthis bidentatae, Chinese rhubarb,luffa stems, white atractylodes rhizome, poria cocos, licorice, white peony root, cortex eucommiae, radix astragali and radix salviae miltiorrhizae. The traditional Chinese medicine powder is preparedfrom the pure traditional Chinese medicine raw materials through nine times of steaming and nine times of sun-drying, avoids direct oral administration, and is free of toxic and side effects, good inweight-losing effect, quick in effect, safer to use, simple in preparation technology, and worth promoting.