B355 of network-induced delay, packet loss and other issues in networked control system, they make the control systems unstable. To solve these problems the method of switching systems based on consecutive number of data packets loss is proposed to establish the networked control system model based on Lyapunov inequality to export the exponentially stable state feedback controller to make the control systems stable, and to establish the quantitative relationship between packet loss ratio and system performance. Finally, the simulation results show that data packets loss ratio of networked control systems (NCSs) is 10% and control systems have good exponential stability.