For different time delays in the networked control systems (NCSs), a universal controller used in NCSs with long time delay and short time delay is designed in this paper. The time delay monitor is placed beside the controller. It keeps on watching the network, and measuring the time delays of the network. Then, the short time delay state feedback controller and long time delay state feedback controller are all designed based on the length of the time delay. When the time delay measured by the monitor is short, the short time delay controller’s parameters are invoked, otherwise the long time delay controller’s parameters are invoked. At last, taking the servo motor NCS as an example to simulate the model established in this paper. The simulation results show that the controller designed in this paper can control the NCSs very well.