Electronic micropump, referred to as electronic pump, is a medical device. Electronic micropump mainly by the analgesic pump electronic control device and drug storage device is composed of two parts, including storage device is a one-time use of aseptic packaging, it is also known as one-time electronic micropump. Electronic micropump by the medical staff based on patient pain pre-set the appropriate dose of medicine for medical units for a long time micro-injection to relieve or reduce patient pain, mainly for postoperative analgesia, painless childbirth, chronic pain, cancer town Pain and other consistent with the use of the product requirements of continuous microinjection and patient-controlled drug delivery.