Abstract: Due to the bandwidth constraints in the networked control system, a deterministic communication scheduling strategy based on error threshold is proposed to control data transmission of network nodes, and the strategy is applied to the MB-NCS (model based networked control system). Then, the model of MB-NCS with communication scheduling function is constructed. Furthermore, the stability of the system is analyzed and the stability region of the controlled plant states is provided. Simulation result shows that the introduced communication scheduling strategy obtains good system performance and reduces the data transmission times obviously, which lightens system dependence on network effectively.