To provide a bag and a package for maintenance of freshness for a long period without discoloration of vegetables and fruits and without generation of a nasty smell and which is good-looking and excellent in respect of cost.

In a fresh bag for accommodating and sealing a kind of yam of 1 Kg or less, made of a polypropylene film. The keep fresh bag can maintain the inside atmosphere of an oxygen content of 0.05-1 %, a carbon dioxide content of 12-18 % and an ethanol content of 10-150 ppm after 48 hours since the kind of yam is sealed inside. More preferably, the thickness of the polypropylene film is 35-50 μm.