PURPOSE: To obtain the subject sheet, provided with a hygroscopic member on the inner surface of a specific synthetic resin film and capable of preserving dried tobacco leaves without deterioration thereof due to absorption of excess water, etc., in the interior without transmitting sunlight and outside moisture.

CONSTITUTION: The objective sheet is provided with a hygroscopic member on the inner surface of a synthetic resin film 1 having ≤60% light transmittance and ≤10g/m2.day moisture permeability. For example, a film such as polyethylene or polypropylene is used as the film 1. For example, a water absorbing resin 4 or a moisture-permeable film 2 containing a hygroscopic agent 5 held in the water absorbing resin 4 is used as the hygroscopic member.