To easily classify and dispose an inside plug made of a plastic with different physical properties from a metal container and a glass container after the container is used by a user such as a housewife at home by removing a tamper evident ring after it is used and at the same time easily removing the inside plug from the neck part of the container in the container in which the inside plug is fitted in the neck part of the container and a removable cap body with the tamper evident ring is provided.

The inside plug removing cap device with the tamper evident ring consisting of the inside plug 10 fitted in the neck part 20 of the container, the tamper evident ring 2 screwed into the inside plug and whose rotation in the screw back direction is stopped by the neck part of the container and the removable cap body 1 mounted by being screwed into the inside plug with the tamper evident ring 2 is provided.