To provide a packaging container equipped with an opener which can be simply and reliably opened and easily reveal a history of opening by a mischief or the like.

The packaging container is a fluid food packaging container 1 equipped with the opener 12 including a cover 11 and a base, and having an openable region 4 on its top 2. The base 13 is fixed to the rear end of the top 2 to rotatably carry the cover with the rear end of the cover 11 as the center. The cover 11 covers part of the top 2 including the openable region 4 and has an engaging portion 14 at a position opposite to the region 4.