To prevent a pressing type cap comprising a cap main body and a protector, which is provided on the outer periphery and prevents the cap main body from being opened, from being fraudulently opened by a fraudulent tool such as a driver from a lid closed state in which the cap is attached to the opening of a can.

An opening edge section 3a of a top lid 3 is formed into an annular inner peripheral side wall 6 facing upward. At the same time, an annular groove 7 in which the outer peripheral side wall 10b of this pressing type cap 10 can be fitted is formed on the outer peripheral section of the annular inner peripheral side wall 6. At the same time, this can is constituted in such a manner that a gap S formed of the outer peripheral side wall 10b of the pressing type cap 10 and the outer peripheral wall 7a of the annular groove 7 of the top lid 3 facing the outer peripheral side wall 10b when the lid is placed by fitting the outer peripheral side wall 10b of the pressing type cap 10 in the annular groove 7 is made narrow.