The present invention relates to a functional hydrated hyaluronic acid and a method for producing 5th generation coated lactic acid bacteria having excellent intestinal mucoadhesive ability and a selective antagonism using the same and, more specifically, to a functional hydrated hyaluronic acid in which components fermented by lactic acid bacteria are captured in hyaluronic acid, which is a natural polymer substance, and a method for producing coated lactic acid bacteria using the same. The quadruply coated lactic acid bacteria coated using the functional hydrated hyaluronic acid according to the present invention is quadruply coated with a water-soluble polymer, a functional hydrated hyaluronic acid, a coating agent having porous particles, and a protein, thereby producing an excellent intestinal mucoadhesive ability, exhibiting an antibacterial action against deleterious bacteria in the intestines, and promoting growth of beneficial bacteria in the intestines.