The invention discloses a Chinese medicinal herb additive for promoting the growth of a piglet and the application thereof; wherein the additive comprises the following components: officinal magnolia bark, bitter orange, Chinese pulsatilla root, medicated leaven, rhizoma discoreae, sepium, dangshen, polygonummultiflorum thunb, hawthorn, rhizoma atractylodis, dried orange peel, milk veteh, malt, the rhizome of large-headed atractylodes, and wild jujube. According to the physiological function of the piglet, all components with the pertinence are compatible with each other, make good for deficiency, are cooperated with each other and mixed in a matching way. Proved by experiments, the additive has the functions of invigorating the stomach, helping digestion, promoting blood circulation, removing blood stasis, calming the nerves, tranquilizing, and increasing immunity, can prevent disease, treat an illness, help the growth, increase the disease resistance of the piglet, does not have any side effect and harmful substance to be remained; only about 20% of dosage of the additive can play greater function; the additive does not harm the digestive system of the piglet and other physiological functions and is beneficial for the growth of the piglet and the strengthen of disease-resistance capability.