The invention relates to an injection device, wherein the injection device comprises a housing； A container holder arranged in the housing, the container holder being configured to receive a drug container, the drug container having a needle attached at one end and a sealable and slidable inner portion inside the drug container at the other end of the drug container, A container holder having a stopper arranged in a longitudinal direction； A drive unit including a plunger rod and a plunger drive means, the plunger drive means being slidable relative to the plunger rod, being rotatably locked with respect to the plunger rod, and rotatable relative to the housing, Further comprising first energy accumulating means arranged in the housing of the injection device and configured to store and store energy, wherein the plunger driving means is configured to be operatively associated with the first energy accumulating means , The plunger driving means is allowed to rotate and the plunger rod is pressed toward the proximal end of the infusion device due to the output torque from the first energy accumulation member so that the infusion can be performed, A driving unit which can be released； And a rotary injection display mechanism configured to display a progression of injection to a user, wherein the rotary injection display mechanism includes a signal transfer member and a drive mechanism for rotationally driving the signal transfer member, and the signal transfer member is connected to the drive mechanism And wherein the drive mechanism is coupled to the plunger drive means at a distal end of the plunger drive means such that progression of the injection is seen through at least one opening provided at least on a distal end surface of the housing, And a rotary injection display mechanism in which the mechanisms are arranged.발명은 주입 장치에 관한 것으로서, 상기 주입 장치는 하우징； 상기 하우징 내에 배열된 컨테이너 홀더로서, 상기 컨테이너 홀더는 약물 컨테이너를 수용하도록 구성되고, 상기 약물 컨테이너는 일 단부에 부착된 바늘 및 상기 약물 컨테이너의 타 단부에서 상기 약물 컨테이너
