The invention discloses a pharmaceutical composition for treating infantile hernia and a preparation method of the pharmaceutical composition. The pharmaceutical composition is prepared from the following raw herbal materials: sheathed monkshood root, akebiaquinata, achyranthes aspera, sargentgloryvine stem, rhizoma sparganii, berchemia lineate, ligusticum wallichii, calamus, pumice, fructus persicae immaturus, air potato, natural copper, parmelia tinctourium, pinellia ternate, mangnolia officinalis, sword bean, semen brassicae, rhizoma cyperi, curcuma zedoary, sensitive plant, angelica citriodora hance, oblongleaf kadsura stem root, root or leaf of cochinchina raspberry, rhizoma nardostachyos, ivy, semen raphani, betel nut, procumbent speedwell, campsis grandiflora, brucea javanica, dutchmanspipe root and indian kalimeris herb. The pharmaceutical composition has the beneficial effects of promoting blood circulation to remove blood stasis, eliminating goiter and removing stasis, promoting qi circulation to relieve pain, opening depression, and guiding qi downward, is mainly used for promoting infantile hernia to heal, and has the advantages of quick effect-taking, high effective rate, exact curative effect, short course of treatment, no toxic or side effect, low price, and the like.