Composed of bottle stopper puncture device protective sleeve, bottle stopper puncture device, air filter or air inlet device, drip bucket, catheter, tee, injection part, flow regulator, liquid medicine filter, outer cone connector, outer cone connector protective sleeve and intravenous infusion needle. 1. Disposable; 2. Sterility; 3. No pyrogen; 4. Ethylene oxide sterilization; 5. With automatic exhaust function; 6. DEHP free