PURPOSE: To provide a sealing package which prevents the buckling of its packaging material and permits its outer lid to be always opened and closed properly and smoothly without causing gathering of the packaging material or other defects to occur, regardless of the remaining amount of the contents.

CONSTITUTION: When an outer lid 7 is peeled off from a hard sheet 6, an inner lid 4, together with the outer lid 7, is peeled off from a packaging material 2 through an opening 6a of the hard sheet 6 with part of the inner lid remaining attached to the packaging material 2 and, through an opening 3 thus formed and the opening 6a of the hard sheet, the contents 1 can be taken out. When the outer lid 7 is reattached to the hard sheet 6, the opening 6a of the hard sheet 6 is sealed therewith. When the outer lid 7 is opened and closed, the occurrence of the buckling or gathering of the packaging material 2 is prevented by the hard sheet 6.