Active queue management（AQM）is a key congestion control scheme for reducing packet loss and improving network utilization in TCP/IP networks. A proportional-integral-derivative（PID）controller is proposed as an active queue manager for internet routers. A hybrid PSO/DE optimum algorithm is applied to optimization of PID controller parameters for avoiding the aimlessness of the error and trial method of controller parameter tuning. The proposed method can fast obtain a set of PID controller parameters that minimizes the performance function by searching the given controller parameters space. The simulation experimental results show that the dynamic and steady performances of the proposed algorithm are sound under the two conditions of common business flow and sudden business flow.