To provide a sealant film excellent in easy opening properties at the time of opening as a package for food or medicines, a laminated film using the same and a package comprising the laminated film.

A laminated film is equipped with the sealant film obtained by laminating a resin composition layer (A) containing a propylene/α-olefin random copolymer (a), high density polyethylene (b) and polybutene-1 (c) and a base material layer (B) comprising a polypropylene resin. The package is constituted of the laminated film. The laminated film can be suitably used especially for constituting a package for a blood sugar level measuring electrode.