(This article introduces the communication principle of FP93 temperature controller, and uses the MSComm communication control in VB6.0 to realize the data communication and real-time monitoring between the FP93 temperature controller and the computer. The field communication experiment shows that the development of the monitoring system based on VB6.0 is very advanced in the control of the industrial surface FP93, which has a positive meaning for improving the automation level in the field of industrial control and improving the on-site office conditions.)