To provide a synthetic resin container lid with a tamper evident property wherein a tamper evident skirt section is extended helically downward from a part connected to the main part of a skirt wall (6) and operation of reattaching the container lid to the mouth section is prevented from being hindered by the tamper evident skirt section, although the whole of the container lid (2) including a tamper evident skirt section (12) is separated from a mouth section when the mouth section (46) is opened.

The arrangement position of axial fracture means (44) formed in the tamper evident skirt section (12) and the arrangement position of a non-fracture zone (30) in circumferential fracture means (8) have a particular relationship, i.e., separation from each other by at least 160 in the circumferential direction.