The invention discloses a traditional Chinese medicine for treating baby anorexia, which is characterized by comprising the following Chinese herbs as main components: 3g of radix aconite lateralis preparata, 1g of cinnamon, 2g of rhizoma zingiberis, 6g of rhizoma atractylodis macrocephalae, 5g of fired rhizoma atractylodis, 6g of Tuckahoe, 5g of endothelium corneum gigeriae galli, 10g of charred fructus crataegi, 10g of medicated leaven, 6g of dried immature fruit of citron orange, 5g of green orange peel, 3g of liquorice, and the like. A preparation method of the traditional Chinese medicine for treating baby anorexia comprises the following steps: putting the Chinese herbs into a container, dipping the Chinese herbs into water for 30min, frying the Chinese herbs by slow fire for 30min, filtering residues, and extracting 50ml of decoction. One dose of the the traditional Chinese medicine is taken before the dinner every day, and three doses are used as one course of treatment. The prescription is prepared from pure Chinese herbs by a traditional preparation method, remains the property of the Chinese herbs, has the efficacy of invigorating the spleen and stimulating the appetite, achieves the aim of treating and has no side effect.