Intravenous infusion is a commonly used method of administration in clinical treatment. Depending on the nature of the drug and the constitution of the patient, the speed of intravenous infusion is also different. Infusion too fast, too slow are difficult to achieve the expected treatment effect, and even affect the nursing safety. At present, the common infusion set widely used in clinic mainly injects liquid to the recipient by the differential pressure of liquid level, and controls the infusion speed by the visual observation of nurses and the manual wheel clamp. The ordinary infusion set lacks the functions of blocking alarm, bubble alarm and liquid infusion finish alarm, which increases the clinical nursing burden. And the liquid bottle is easy to introduce the outside air pollution liquid. Infusion pump infusion pump is a kind of can accurately control the infusion drip number or infusion velocity, ensure uniform drugs can speed, patient dose accurately and safely into play a role in the body of a device, is an intelligent infusion device at the same time, the infusion speed is not affected by the body back pressure and the operator, accurate and reliable infusion will help reduce the intensity of clinical nursing work, improve the accuracy of the infusion, safety and quality of care.