PROBLEM TO BE SOLVED: To provide a multi-chamber container accommodating a small container inside a container body, in which the small container can be opened more easily at the same time as storage parts on the container body side are opened.SOLUTION: A multi-chamber container comprises: a container body having a plurality of storage parts a discharge port connected to the storage parts a partitioning weak seal part for partitioning the container body into the plurality of storage parts, which is opened and communicated with each other by increasing the pressure inside the storage parts a small container provided in one of the storage parts and opened simultaneously with the opening and communicating of the partitioning weak seal part a first inside seal part having a shape inclined toward the small container side from one end side of the partitioning weak seal part to a center side and a second inside seal part having a shape inclined toward the small container side from the other end side of the partitioning weak seal part to the center side. The first inside seal part and second inside seal part do not cross each other.
