The Chinese translation of NIBP is non-invasive blood pressure. NIBP is an indirect method of measuring the blood pressure of the human body. The value measured with non-invasive measurement of blood pressure has a certain error with the real blood pressure value of the human body. NIBP still has the advantages: 1. It is not traumatic to the human body and can be repeatedly measured. 2. It is simple and convenient to operate and easy to master. 3. It has a wide range of adaptability, regardless of which year clinical section, whether or not to do surgery, blood pressure fluctuations are mostly applicable. 4. Monitoring, save time and effort, ordinary people will also operate. 5, its detection of the average arterial pressure, that is, after multiple measurements, the accuracy is also very high, in the clinical application of the most widespread, non-invasive blood pressure monitoring of the normal value of 24h average blood pressure is less than 130/80mmHg, less than 120/70mmHg during sleep, less than 140/90mmHg when awake.