The main component of konjac gum is glucomannan, is a kind of low-calorie, low protein, high dietary fiber food, and of more than ten kinds of amino acids and trace elements. As a functional food, it also has a water soluble, thickening, stability, suspension, gel, film, adhesive and so on a variety of physical and chemical properties, so it is a kind of natural health food and also the ideal food additives.