The invention provides a traditional Chinese medicine composition for treating acid reflux, which comprises the following raw materials in parts by weight: 2-15g of radix curcumae, 2-10g of cape jasmine, 2-15g of bamboo shavings, 2-10g of pseudo-ginseng, 3-12g of ginger, 10-30g of pearl shell, 3-12g of light fermented soya bean, 5-20g of cuttlebone, 3-12g of honey-fried licorice root, 5-25g of loquat leaf, 3-15g of dried tangerine peel, 5-25g of dandelion, and 5-25g of jujube. The preparation method comprises the following steps: taking the raw material medicines for cleaning and removing impurities, adding water to decoct the materials and merging filtrates, concentrating and cooling the materials, adding ethanol to make an alcohol content of 20 to 80%, recovering the ethanol, and concentrating a supernatant into a thick paste for standby; and drying the thick paste to prepare a corresponding dosage form, wherein the dosage form includes a pill, a lozenge, pulvis, a powder, a particulate agent or a decoction bag. The traditional Chinese medicine composition can cure the acid reflux, treat the esophagitis, esophageal reflux and pharyngitis caused by the acid reflux, and can restorethe elasticity of the sphincter, simultaneously purify the stomach, and regulate and consolidate the gastric mucosa.