The invention relates to a medicine for treating stomach diseases, more specifically a traditional Tibetan medicine pill for strengthening the spleen and stomach. The medicine for treating stomach diseases is prepared from the following active pharmaceutical ingredients: myrobalam, tsaoko, calcite, travertine, pterocephalus hookeri heck, nutmeg, Herpetospermum pedunculosum, clove, safflower, pomegranate, costus root, pawpaw, honey, agilawood, Saxifrage, Zhaxun and cardamom. A preparation method comprises the following steps: pretreating raw materials, processing the medicines, pulverizing, sterilizing, screening, mixing, making into pills, baking, polishing, packaging and warehousing. The invention has the effects of strengthening the spleen and stomach, relieving pain, preventing or arresting vomiting, separating clear and excreting turbid, quickly reliving the spasm of the gastrointestinal smooth muscles, and improving the gastrointestinal functions so as to alleviate pain, eliminate gasterectasis, and belching and the like; and the invention can effectively kill Helicobacter pylori, resist inflammation, soothe the gastric acid, form a gastric mucosa protective shield, enhance the gastric mucosa blood flow and promote the restoration of the gastric mucosa, thereby thoroughly relieving the diseases. The invention has the advantages of quick effect taking, favorable curative effect, short treatment course, no side effect and high safety and reliability, is convenient to use, is a branded product of Tianzhu Traditional Tibetan Medicine, and is well welcomed by massive people and patients.