Abstract: In order to solve the problems existed in operation pressure monitoring of hydraulic support, such as difficulty in collecting huge data, real-time and complex structure, a set of monitoring platform based on embedded system and CAN bus was developed in this paper. The platform, with structure of microprocessor STM32 and CSN bus module and Ethernet module, and with μC/OS-II operating system implanted, could receive and the real-time pressure data quickly from hydraulic support and send to monitoring center, and showed advantages in accuracy and structure as well as cost. Also, the test result showed that the platform had meet the requirement, so it could be practically applied in coal-mine. Key words：hydraulic support, monitoring platform of pressure, embedded system, CAN bus