Relating to the field of traditional Chinese medicines, the invention discloses a traditional Chinese medicine treating early cataract and its preparation method. The traditional Chinese medicine is prepared by decocting the following raw materials by mass: 5-10 of fructus lycii, 6-8 of rehmannia glutinosa, 1-3 of Chrysanthemum, 2-4 of Rhizoma Anemarrhenae, 2-5 of phellodendron, 3-5 of Salvia Miltiorrhiza, 4-8 of Eucommia, 2-4 of rhizoma alismatis, 1-2 of Angelica, 5-8 of Poria cocos, 2-3 of white paeony roots, 5-7 of Caulis Dendrobii, 3-5 of Polygonatum odoratum, 2-3 of Ligustrum lucidum, 3-5 of Cornus officinalis, 4-5 of parasitic loranthus, and 2-3 of American ginseng. The materials are added into pillis ophidiae stir-fried to yellow, mung beans and white sugar, and then the mixture is steamed on high heat for 25-35min, thus obtaining the product. The invention has significant efficacy, provides an effective treatment scheme for cataract patients, and makes patients exempted from operation suffering.