The invention relates to a traditional Chinese medicine composition for treating uterine hypoplasia, a preparation method thereof and application of the composition in preparation of a medicine used for treating uterine hypoplasia. The composition comprises the following bulk drugs: human placenta, dodder seed, epimedium herb, barbary wolfberry fruit, morinda root, degelatined deer-horn, fluorite, desertliving cistanche, tortoise carapace and plastron, asiatic cornelian cherry fruit, tuber onion seed, Chinese angelica, cibot rhizome, Indian bread, common yam rhizome, debark peony root, ginseng and largehead atractylodes rhizome. The traditional Chinese medicine composition can be prepared by using a conventional traditional Chinese medicine preparation method to obtain a clinically applicable preparation; preferably, the preparation is an oral preparation or an externally applied preparation; and more preferably, the oral preparation is a decoction, and the externally applied preparation is an externally applied powder. The invention has the following characteristics: the traditional Chinese medicine composition has a remarkable curative effect no toxic and side effects, and the preparation method is simple.