Interconnection networks have become a technical bottleneck to improve the performance of high-performance computing systems. The congestion control in high-performance interconnection networks is studied. Aiming at the formation process of communication hotspots, a hardware dynamic congestion control mechanism (CMDPD) is proposed. The transmission delay variation of packets is used to predict the network congestion state, and the end-to-end network injection is controlled to avoid the network congestion. The simulation environment is built up, and CMDPD is simulated under Fat-tree and Dragonfly networks. The results show that the throughput of CMDPD in Fat-tree network is improved by 5%~12% .