The invention discloses a traditional Chinese medicine composition preparation method. The method comprises the following steps: 1)a lamiophlomis rotate extract product, a girald daphne bark extract product and PCEC are dissolved in ethyl acetate, then a pseudo-ginseng extract product is added in an aqueous solution, after emulsification, a water-in-oil emulsion is formed, the amount of lamiophlomis rotate extract product, the girald daphne bark extract product and the pseudo-ginseng extract product accounts for 1% of PCEC mass percentage, PCEC amount accounts for 5% of that of ethyl acetate; 2) the emulsification is added in a poloxamer-containing water solution, emulsification is carried out again, a compound emulsion is formed; and 3) ethyl acetate in the compound emulsion is performed to obtain the drug-loading nanoparticles. The invention also discloses a traditional Chinese medicine composition. The invention also provides an application of the traditional Chinese medicine composition for hemostasis and analgesia. According to the invention, the hydrophilic pseudo-ginseng extract product and hydrophobic lamiophlomis rotate extract product, and the girald daphne bark extract product are loaded in the nanoparticle, and the prepared nano preparation can realize the rapid long-term hemostasis and analgesia effects with high efficiency.