The work aims to propose a power metering and packaging control system based on fuzzy PID, regarding the non-linear characteristics of the powder flow rate and the screw speed in such system. The powder packaging metering control system consisted of screw metering mechanism, weighing mechanism and signal acquisition and processing unit, etc. According to the system characteristics and combined with the fuzzy logic, the fuzzy adaptive adjustment mechanism was established to adjust the PID controller parameters online, so as to adapt to the non-linear change in the system characteristics. Based on Matlab, the control system was simulated. The maximum deviation was 0.8% in the process of prototype metering control. The simulation results showed that the fuzzy PID had better effects than the traditional PID. The actual control of the control system is stable and robust, and can meet the needs of the actual control system.