The invention provides a networking tracking control method of a time-varying signal, belonging to the field of automatic control. The mathematical model of a controlled object is obtained by using the method of fuzzy clustering in an offline way, the prediction output of the controlled object is obtained by using an iterative method according to the mathematical model, and the deviation of a controlled process output and a model calculation output is used to correct a prediction model in an online way. The deviation of a future given value and the predicted model output and the change of the deviation are taken as state variables, and a switching function is constructed. The switching function and the variation of the switching function are used as the input of a two-dimensional fuzzy controller, and future sliding mode control effects are obtained through fuzzy control. The future sliding mode control effects are 'packaged' and sent to a process terminal by the controller end through a network, and a control sequence is selected through a network time delay compensator to act on the controlled process at the process terminal so as to compensate the time delay in a compensation network. In a next execution period, the execution is repeated. According to the method, the uncertainty existing in the network is overcome, and the method is more suitable for the network tracking control of a nonlinear system.