An ink replenishment container for replenishing ink into an ink tank of a printer via an ink inlet flow path member of the ink tank, the ink inlet flow path member having a plurality of flow paths partitioned by a partition, the ink replenishment container comprising: a container main body configured to accommodate the ink; an ink outlet forming portion coupled to the container main body and including a tubular portion having an ink outlet; and an outlet valve unit mounted in the tubular portion, wherein the outlet valve unit includes a valve housing mounted to provide a gap with an inner peripheral surface of the tubular portion in the tubular portion, a sealing member mounted in the valve housing and having an opening through which the ink inlet flow path member is inserted and removed, and a valve body mounted in the valve housing to be movable in a central axis direction of the ink outlet, and movable between a valve close state in which the valve body is in contact with the sealing member and a valve open state in which the valve body is pressed by the ink inlet flow path member and separated from the sealing member, the valve body includes a partition contact portion having an end surface configured to contact with the partition of the ink inlet flow path member, and the valve housing includes a through-hole (Ho) which communicates with the gap, and the through-hole communicates with the ink inlet flow path member in the valve open state. a container main body configured to accommodate the ink; an ink outlet forming portion coupled to the container main body and including a tubular portion having an ink outlet; and an outlet valve unit mounted in the tubular portion, wherein the outlet valve unit includes a valve housing mounted to provide a gap with an inner peripheral surface of the tubular portion in the tubular portion, a sealing member mounted in the valve housing and having an opening through which the ink inlet flow path member is inserted and removed, and a valve body mounted in the valve housing to be movable in a central axis direction of the ink outlet, and movable between a valve close state in which the valve body is in contact with the sealing member and a valve open state in which the valve body is pressed by the ink inlet flow path member and separated from the sealing member, a valve housing mounted to provide a gap with an inner peripheral surface of the tubular portion in the tubular portion, a sealing member mounted in the valve housing and having an opening through which the ink inlet flow path member is inserted and removed, and a valve body mounted in the valve housing to be movable in a central axis direction of the ink outlet, and movable between a valve close state in which the valve body is in contact with the sealing member and a valve open state in which the valve body is pressed by the ink inlet flow path member and separated from the sealing member, the valve body includes a partition contact portion having an end surface configured to contact with the partition of the ink inlet flow path member, and the valve housing includes a through-hole (Ho) which communicates with the gap, and the through-hole communicates with the ink inlet flow path member in the valve open state.