To provide a full-open type can 2 capable of easily manufacturing and hardly generating any cut.

The can 2 is of full-open type and the top can 2 comprises a cylindrical trunk 4, a top cover 6 for blocking the top of the trunk 4, and a protection piece 8. The top cover 6 has a disk 14, a rim 16 located outside the disk 14 and mounted on the trunk 4, a split line 18 located on a boundary between the disk 14 and the rim 16, and a pull-tab 20 for splitting the split line 18. The protection piece 8 has a base 30, and a ring 32 hung down from the base 30 at a peripheral edge of the base 30. The base 30 has an opening 36 capable of passing through the pull-tab 20. The ring 32 is formed to cover a cut end of the disk 14 at the time of opening and after opening. It is preferable that the ring 32 is formed to be mounted on the trunk 4 by locking in the vicinity of an upper end of the trunk 4.