Abstract: The network coding optimization mechanism OMNR(optimization mechanism for network-coding based on rate-match) was proposed. The mechanism achieves the rate match based on the solution of the linear programming function on data transport rate and the introduction of the data ticket parameter in coding-aware multi-path routing. And the dynamic adjustment on rate match process was achieved by the probability detection of the decoding delay of data generation that reflects data decoding state in destination nodes. The real-time measurement on the data transport round-trip delay in routing selection and acknowledgement information in network coding guarantees the data transport reliability. Theoretic analysis and simulation show the validity and reliability of the model.