PROBLEM TO BE SOLVED: To provide a composition for improving intestinal environment and intestinal tract barrier in which the barrier function of a brittle intestinal tract or the damage of epithelial cells of the intestinal tract is improved, and antigen-antibody reaction by undigested protein is suppressed.SOLUTION: A composition for improving intestinal environment and intestinal tract barrier, which reduces intestinal environment and a barrier index, is formed by mixing: a component (A) composed of at least one of probiotics which are any one of lactic acid bacteria, bifidobacteria, saccharification bacteria, bacillus natto, and yeasts, or the mixture thereof, biogenics which produce bacteria such as lactic acid bacteria, and prebiotics composed of at least guar gum enzyme degradation product； and a component (B) composed of at least one of L-glutamine, zincs, vitamin A, and vitamin D.SELECTED DRAWING: Figure 1【課題】脆弱となった腸管のバリア機能や、腸管の上皮細胞のダメージを改善して未消化の蛋白質による抗原抗体反応を抑制する腸内環境及び腸管バリア改善組成物の提供。【解決手段】乳酸菌、ビフィズス菌、糖化菌、納豆菌、酵母菌のいずれか、もしくはそれらの混合物であるプロバイオティクス、乳酸菌などの菌生成物質であるバイオジェニックス及び少なくともグアガム酵素分解物からなるプレバイオティクスのうち少なくとも一つからなる（Ａ）成分と、Ｌ－グルタミン、亜鉛類、ビタミンＡ類、ビタミンＤ類のうち少なくとも一つからなる（Ｂ）成分と、を混合してなり、腸環境・バリア指数を低下させる腸内環境及び腸管バリア改善組成物。【選択図】図１
