<;P>;PROBLEM TO BE SOLVED: To provide an intestinal tract protectant which suppresses the degradation of barrier function of intestinal tract and the outbreak of inflammatory reaction in intestinal tract when the defence mechanism of intestinal tract falls, thus enabling the suppression of intestinal mucosa disorders. <;P>;SOLUTION: The invention relates to an intestinal tract protectant which contains, as an active constituent, a fungus body of a bacterial strain belonging to Lactobacillus brevis or its processed object, and also relates to an intestinal tract protectant which contains, as an active constituent, a culture supernatant of a bacterial strain belonging to Lactobacillus brevis or its processed object. <;P>;COPYRIGHT: (C)2010,JPO&INPIT