The invention discloses a novel traditional Chinese medicine composition with functions of defaecation and detoxification, skin care and freckle dispelling, and a preparation method thereof. Tuber fleece-flower root, cassia seed, aloe, angelica, sealwort, polygonatum, immature bitter orange, bighead atractylodes rhizome and black sesame are taken as raw materials, different physical or chemical methods are adopted as the raw materials to prepare clinically acceptable formulation according to different physicochemical property of each traditional Chinese medicine effect component. The invention has unique prescription, and can be clinically used for treating constipation and chloasma with obvious effect.