The invention provides an oral liquid for treating gastric and duodenal ulcer effectively. The oral liquid comprises following traditional Chinese medicine raw materials: galangal, roots of Chinese thorowax, white paenoy roots, cassia barks, mandrake roots, rhizoma cyperi, rhizoma nardostachyos, rhizoma bletillae, perilla stems, immature bitter oranges, hedgehog hides, dried gingers, bergamot, toosendan fruit, agrimonia pilosa ledeb, white atractylodes rhizome, corydalis tuber, allium macrostemon, dock roots, fructus amomi, concha arcae, thunberg fritillary bulbs, peach kernels, trogopterus dung, meadowrue root and rhizome, liquorice, lychee seeds, baical skullcap roots, dandelion, lotus rhizome nodes, small diuranthera roots, cattail pollen, aspongopus, coptis chinensis, bulbus fritillariae cirrhosae and poria cocos. The oral liquid for effectively treating gastric and duodenal ulcer provided by the invention starts with double health efficacy of liver protection and stomach nourishing, and has unique curative effects on various gastrointestinal diseases and patients with liver injuries caused by drinking for a long time, has modern medicine incomparable miraculous effects, and can relieve pains of the patients fundamentally.