The invention relates to a traditional Chinese medicine composition for treating enteritis as well as a preparation method and application thereof. The composition is prepared from the following raw materials: mastic, roots and leaves of clerodendron cyrtophyllum turcz, radix scutellariae, melilotus officinalis, bletilla striata, Jiao Jian Qu, radix codonopsis, semen plantaginis, calculus bovis, fenugreeks, gallnuts, indigofera pseudotinctoria mats, poria cocos, phyllanthus ruinaria, pseudo-ginseng, fructus rosae laevigatae, smilax china, halloysitum rubrum, Jiang Chuan Lian, rhizoma corydalis, cinnamon, cuttlebones and rhizoma cimicifugae. The traditional Chinese medicine composition for treating the enteritis has effects of regulating qi for strengthening spleen, regulating the middle energizer, eliminating dampness and reducing phlegm, also has good effects of resisting bacteria, eliminating inflammation, clearing away heat and toxins, stopping bleeding, relieving pain, promoting blood circulation to remove blood stasis, reducing inflammatory exudation, eliminating bloody purulent stool, cleaning the ulcer surface of the intestinal mucosa and promoting repair and healing of ulcer surface of the intestinal mucosa, is wide in treatment range, good in therapeutic effect and high in healing rate, is safe and reliable, does not have side effects, and has extremely good commercialprospect.