Fuzzy control is a nonlinear control strategy based on fuzzy inference. It shows the people’s operational experience and common sense rules of inference through fuzzy language. For the jigging discharging system, its overall structure and the necessary hardware and software in the process of controlling are designed. And then, the fuzzy control of jigging discharging system is actualized based on S7-300 PLC. After on-site commissioning, the control system can meet the site requirements.