A tongue-lid package of the present invention has an outer box (2). A separation line (70) demarcating a U-shaped to-be-cut-off portion (72) is formed in a front wall (20) of the outer box (2). The separation line (70) includes right- and left-side perforated lines (80, 82) that form a part of both sides of the to-be-cut-off portion (72). The perforated lines have a plurality of perforations (84) and intermediate portions (86) between the cuts (84). The intermediate portions (86) of the right- and left-side perforated lines are arranged asymmetrically to axis X of the to-be-cut-off portion (72).