Abstract: This paper describes a distributed monitoring system based on MSP430 single chip microcomputer.This system can achieve timing acquisition of multi-channel data and adopt distributed structure.Besides,the data detection network is made up by coordination of multiple workstations,through a serial port communication for data transmission,which makes the system configuration flexible and guarantees high reliability,good data instantaneity and expansibility of data channel to satisfy the real-time monitoring needs of healthy operation of boiler.