The invention discloses an antidiarrheal Chinese medicinal ointment, which includes the following raw materials: pomegranate peel, coix seed, lotus leaf, Poria cocos, bighead atractylodes rhizome, pinellia ternate tuber, Psidium guajava, White Hyacinth Bean, radix angelicae pubescentis, radix puerariae, rhizoma zingiberis preparata, Quisqualis indica, ophiopogon japonicus, and prunella vulgaris. The preparation method includes: weighing the raw materials, adding water to conduct soaking, adding an extraction solution, conducting decoction by strong fire till boiling, then further conducting decoction by slow fire for 20-45min, taking the filtrate, subjecting the filter residue to air drying, conducting crushing, adding the extraction solution, conducting decoction by strong fire till boiling, then conducting decoction by slow fire, and adding the obtained filtrate to conduct decoction into a paste, thus obtaining the antidiarrheal Chinese medicinal ointment. Directed at the problems in the prior art, the invention provides an antidiarrheal Chinese medicinal ointment, a preparation method and use method thereof so as to overcome the defect that direct taking of antidiarrheal drugs can cause side effects to the human body. Another purpose of the invention is to provide a Chinese medicinal application plaster with good curative effect and low cost, so that the process for treatment of diarrhea by Chinese herbs can be milder.