A traditional Chinese medicine for treating acute gastroenteritis is prepared from the following medicinal materials in parts by weight : 10 parts of Pogostemonis Herba, 9 parts of Angelicae Dahuricae Radix, 9 parts of Perillae Folium, 12 parts of Rhizoma Atractylodis Macrocephalae (roasted), 9 parts of Pinelliae Rhizoma (processed), 9 parts of Citri Reticulatae Pericarpium, 15 parts of Poria, 9 parts of Magnoliae Officinalis Cortex (processed with ginger juice), 10 parts of Glycyrrhizae Radix et Rhizoma, 10 parts of Platycodonis Radix, 5 parts of Zingiberis Rhizoma Recens, 9 parts of Arecae Pericarpium, and 15 parts of Jujubae Fructus.