The breast pump shield assembly includes a breast shield having a parabolic shape with upper and lower apertures. A conduit in fluid communication with the lower aperture receives the expressed milk and directs it to a container. A vacuum introduces through the upper aperture creates a suction within the breast shield. A center insert fits closely within the lower aperture and has a flared end with an annular surface for contacting and applying an outward force against a circular area around the nipple. A stepped-down distal section of the center insert has an outlet end with a flap valve to prevent suction from being drawn into the breast milk container while permitting expressed milk to flow into the container.
