The invention discloses a Chinese medicinal composition for treating gastritis and a method for preparing same. The Chinese medicinal composition contains the following raw materials by weight: 5 parts to 10 parts of Lysimachia capillipes Hemsl, 1 part to 3 parts of Lespedeza bicolor Turcz, 3 parts to 5 parts of Pyrrosia lingua, 10 parts to 20 parts of American ginseng, 3 parts to 5 parts of Radix Astragali, 3 parts to 8 parts of Szechuan Lovage Rhizome, 5 parts to 10 parts of Radix Curcumae, 5 parts to 10 parts of rhizoma alpiniae officinarum , 3 parts to 5 parts of Radix bupleuri, 5 parts to 10 parts of sweet potato leaves, 10 parts to 15 parts of asparagus 3 parts to 5 parts of tuckahoe, 4 parts to 6 parts of fructus amomi, 6 parts to 8 parts of angelica sinensis, 3 parts to 5 parts of Fructus aurantii, 2 parts to 3 parts of Cyperus rotundus, 3 parts to 8 parts of montmorillonite powder, 1 part to 3 parts of aspongopus, 3 parts to 4 parts carbonized swim bladder, 5 parts to 10 parts of carbonized dark plum, 5 parts to 10 parts of Radix Asparagi, 3 parts to 8 parts of castor bean , 8 parts to 12 parts of carbonized Fructus Crataegi, 3 parts to 8 parts of Coptis Root Coptidis rhizoma and 1 part to 3 parts of Fructus Citri Sarcodactylis. The traditional Chinese medicine composition has fast and effective efficacy in treatment of the gastritis, being capable of effectively preventing and treating various types of gastritis, gastric ulcer, peptic ulcer and precancerous lesions; and further, the traditional Chinese medicine composition is safety with less adverse reactions.