The invention discloses 
internal medicine powder for treating 
esophagus cancer and a preparation method of the 
internal medicine powder. The 
medicine powder comprises the following components in parts by 
mass: 1-3 parts of 
euphorbia lunulata, 1-3 parts of Radix lsatidis, 1-3 parts of 
calculus bovis factitius, 1-3 parts of 
sal ammoniac, 1-3 parts of radix clematidis and 1-3 parts of prepared 
Arisaema consanguineum Schott. The method for preparing the 
medicine powder comprises the following steps: selecting clean 
euphorbia lunulata, Radix lsatidis, 
calculus bovis factitius, 
sal ammoniac, radix clematidis and prepared 
Arisaema consanguineum Schott in parts by 
mass, and respectively removing residual impurities and dust for later use; filling the medicines into a cloth bag, sealing the bag, soaking in cold boiled water for 50 minutes until the 
medicine textures are thoroughly soaked, putting the medicines into a 
drug-decocting 
machine, injecting a proper amount of cold boiled water, decocting and boiling at a high temperature, decocting at a low temperature, heating and concentrating into thick paste in a specific amount, and containing the thick paste into a baking pan for later use; 
drying the thick paste medicine in the baking pan by using an air-blowing 
drying oven while controlling the temperature to be 85-95 DEG C, thereby obtaining 
traditional Chinese medicine extract after 
drying; and 
grinding the extract into powder by using a 
superfine grinding machine, and screening, thereby obtaining finished extract 
dry powder.