Avantes Company does not open the serial port of its spectrometer,so it's not suitable for long-distance communication between the spectrometer and PC in industrial applications.This paper raised a program for serial communication between PC and Avantes spectrometer.The hardware structure for communication was given,and communication protocol was formulated,thus the serial communication program was realized by VC++6.0 in Windows environment.Meanwhile,this paper developed a system for real-time waveform display and spectrometer data collection,and it was proved by practice that the system embodies stable operation and strong real time capacity.Furthermore,this system has very strong practicability with its simple programming method as well as its high versatility.