PROBLEM TO BE SOLVED: To provide a liquid composition having satisfactory tube flowability and bacteriostatic properties while having a high calorific value, and further to provide an acid-resistant liquid nutritive composition which has high emulsion stability and preferably a low osmotic pressure and can be stored for a long period of time.SOLUTION: There is provided an acid-resistant liquid nutritive composition which contains a protein, a carbohydrate, an emulsifier, oils and fats, and water, wherein the blending amount of the protein (A) is 2 to 11 mass%, the blending amount of the carbohydrate (B) is 10 to 35 mass%, the total blending amount of the emulsifier (C) and the oils and fats is 1 to 13 mass%. The acid-resistant liquid nutritive composition comprises: at least collagen peptide and milk peptide having a decomposition degree of 23 to 35 as the protein (A); at least a decomposed product of starch having a number average molecular weight of 400 to 900 as the carbohydrate (B); at least (i) a polygly
