This invention is to provide an injection bag,It is mainly integrated into a bag body,The bag body is pressed by heat to make the middle part of the bag body set as a medicine liquid volume chamber for injecting medicine liquid,The liquid medicine chamber is surrounded by an air chamber for air injection,A puncture part is arranged on the pressing edge between the liquid medicine chamber and the air chamber,The puncture part is set as a thin thickness,And a needle is arranged on the wall surface of the air chamber corresponding to the puncture part,The bag body is provided with a hanging hole,The bottom of the bag body is provided with an infusion connector,So,The puncture part between the liquid medicine chamber and the air chamber is punctured by the needle,The air in the air chamber enters the liquid medicine chamber,Through the air pressure, the liquid medicine can be more smoothly exported from the injection bag.本創作係在提供一種注射液袋，主要係一體成型設有一袋體，該袋體經熱壓合使中間部位設為供注入藥液之藥液容室，該藥液容室之外圍設為供注入空氣之空氣容室，該藥液容室與空氣容室之間的壓合緣上設有一穿刺部，該穿刺部設為較薄之厚度，而空氣容室之壁面上對應於該穿刺部之位置上設有一刺針，該袋體上設有一掛孔，該袋體之底部設有一輸液接頭，如此，藉由該刺針刺破該藥液容室與該空氣容室之間的穿刺部，使該空氣容室內之空氣進入到該藥液容室內，藉由空氣之壓力使藥液得以更為順暢地由該注射液袋內輸出。
