Real-time Event Channel is increasingly being used in a wide variety of Distributed real-time and embedded (DRE) computing systems. One problem with Real-time Event Channel is that it is sensitive to overload. By analyzing and simulating the performance of Real-time Event Channel..this paper revealed the relationship between maximum customers number permitted by Real-time Event Channel and utilization of the system. Thus a fuzzy control mechanism of Real-time Event Channel performance is presented, to control and adjust maximum customers number of Notification Service system. Finally, we fulfilled simulation experiment on mechanism, the outcome shows that fuzzy control can be accommodated to the change of Real-time Event Channel system load and system model more easily, and can control the load at random more efficiently than usual controller do.