The propagation of pulse waves is closely related to the characteristics of the cardiovascular system, which is affected by factors such as heart status, arterial system characteristics, and blood parameters. Blood pressure, blood flow, and blood vessel elasticity are closely related to the heart, and changes between them affect each other.What is commonly referred to as blood pressure measurement is the measurement of arterial blood pressure. Arterial blood pressure measurement is a routine and important item for clinical patient testing, and is an important basis for disease diagnosis and curative effect. Non-invasive continuous blood pressure measurement can provide measurement of stroke blood pressure value, monitor blood pressure changes for a long time, and provide a more accurate and sufficient basis for disease diagnosis and treatment. It has important clinical significance and advantages and has become a key factor in blood pressure measurement. Important development trends in measurement method research.