A cradling device of a portable electronic apparatus, which includes a first housing, and a second housing which is slid from the first housing and then is cradled with a slant on the first housing. The second housing can rotate relative to the first housing. The cradling device includes a first member provided in the first housing; a slidable second member capable of sliding, which is provided in the second housing and faces the first member; and at least one cradling module provided in the first housing and the first member, which rotates the first member together with the second member on a rotation axis and cradles the second housing after sliding movement of the slidable second member.