To provide a paper vessel having a function enabling a person to easily open the sealed vessel in which a food is housed, pour water, boil the food in a microwave oven, and drain off the hot water.

The gable top type paper vessel whose top is formed in a shape of a gable roof is a gable top type paper vessel which includes: an opening piece for opening the top completely by pinching the top seal part by fingers and unsealing the same on the upper side of a pair of outside rib panels facing each other; an incision made by cutting only the respective base material layers on the upper side of a pair of side panels facing each other; a plurality of holes each penetrating the laminate along a folding line in the lower part of side panels forming at least a corner of a quadrangular prism and connected to each other via the folding line; and a seal label sealing the holes from the laminate layer side.