The present invention provides a disintegrating tablet which displays excellent disintegrating ability, strength and drug stability while containing a hygroscopic drug. Specifically, the present invention provides a disintegrating tablet comprising a drug having an equilibrium moisture content of 10-20% under a relative humidity of 75% at 25°C, erythritol, mannitol, and hydroxypropyl cellulose having an equilibrium moisture content of 5-20% under a relative humidity of 75% at 25°C and having a viscosity of 100-2000 cps when being in the form of an aqueous solution of 20% by mass at 37°C, wherein said disintegrating tablet contains said drug in an amount of 15-50% by mass of the total amount of said disintegrating tablet and has porosity of 10-40%.
