This combination container/syringe (1) is provided with: an outer tube (10) that forms a tubular shape centered around an axis line (O)； a front stopper that is fitted in the tip end of the outer tube (10)； and a tube end (50) that is fitted to the outer periphery of the tip of the outer tube via a fitting hole (61) at the base end of the tube end, and that has a bypass chamber (71) that accommodates the front stopper at the front side of the fitting hole. In the combination container/syringe (1), the inner diameter of the bypass chamber is formed larger than the outer diameter of the front stopper, and a plurality of ribs (74) that protrude towards the inside in the radial direction, extend in the direction of the axis line, and tightly contact the outer peripheral surface of the front stopper that has moved to the inside of the bypass chamber, are provided leaving intervening gaps in the peripheral direction. By means of this combination container/syringe, it is possible to effectively eliminate air bubbles in a drug via a drug flow-through space formed across the peripheral direction between the inner peripheral surface of the bypass chamber and the outer peripheral surface of the front stopper.
