Abstract: It is intended to provide an N-acetylglucosamine tablet, with which N-acetylglucosamine can be taken in an amount at which a physiological activity can be expected in a small number of tablets, and which has an excellent disintegrating property and solubility in the oral cavity and has an adequate hardness to such an extent that it is not difficult to handle; and a process for producing the same. A saccharide having low moldability is mixed with or sprayed on N-acetylglucosamine to perform coating and/or granulation, and a saccharide having high moldability is mixed with the obtained granulated matter to perform molding, whereby the N-acetylglucosamine tablet disintegrating in oral cavity which has a tablet hardness of 5 to 20 kgf and a mass per tablet of 1,000 to 3,000 mg, and which rapidly disintegrates and dissolves in the oral cavity is obtained.