Abstract: A packaging container includes a base, a cover including a resilient unit and defining a deformable slot at the resilient unit, and a positioning hinge member provided at the base and rotatably received at the deformable slot to pivotally couple the cover with the base so as to enable the cover being pivotally folded between an opened position and a closed position, wherein the positioning hinge member has a non-circular cross section and is arranged in such a manner that when the positioning hinge member is rotated within the deformable slot, the resilient unit generates a resilient restoring force to assist the cover being folded between the opened and closed positions.