To propose a paper container for drinks or foods, which has a steam permeation mechanism to cope with microwave heating.

The paper container for liquids of a gable top-type comprises: a square prismatic trunk part having four connected side boards and an overlap width piece connected to one of the four side boards; a gable top-type top part which is formed on one open end of the trunk part and folded/closed in a gable-roofed state; and a bottom part formed on the other open end of the trunk part and has such an oblong in the horizontal cross section that, out of the side boards, the width of each of a pair of side boards connected to roof boards is wider than that of each of a pair of other side boards connected to gable boards.