Ambulatory blood pressure measurement has important clinical significance for diagnosis and treatment of cardiovascular disease. Ambulatory blood pressure monitoring system can real-time record patient’s blood pressure values

accurately and effectively help doctors to diagnose hypertension. The design of ambulatory blood pressure monitoring system is based on micro-controller unit（ MCU） MSP430F5529

which can timing control DRV8830 starting pump valve by realtime clock（ RTC） DS1388. The system achieves functions of timing measurements

raw datas storing

LCD realtime displaying. The system can upload raw datas through USB interface build-in MCU to PC

and analyze and judge measurement datas. This ambulatory blood pressure monitoring system has small size

low power consumption and can monitor blood pressure regularly for a longtime

and has important role in prevention and diagnosis of hypertension near hypertension and cardiovascular disease.