Abstract: Network traffic monitoring system is the main part of network management, and how to capture the network data packets is the base, but traditional schemes lack of forecasting and alarm functions on network traffic with low efficiency.This paper proposes a network traffic monitoring scheme with high efficiency.In the scheme, we will analyze the captured data packets and put the good user interface on the analysis results to users.Based on the capturing and analyzing, the network traffic statistics and alarm has been implemented.When the network flow is abnormal, the systems can timely feedback to the network administrator, which allows the network administrator to understand the network running status and crisis and make some corresponding coping strategies.Experimentations show that the performance is good.