<p>To address the challenge of optimizing flax fiber properties, this study developed an enhanced system based on the laccase-TEMPO (LT) system. By optimizing process conditions and introducing EDTA, an ELT system was formed to improve degumming efficiency, lignin removal, and fiber quality, while preserving fiber strength and whiteness, and minimizing damage to cellulose. Firstly, the problem of the low removal rate of pectin and hemicellulose by the ELT system was investigated by introducing a pectinase and hemicellulase compounding system. Subsequently, the optimal reaction conditions were determined using response surface methodology, which significantly improved the pectin removal rate and the weight loss rate. However, the lignin removal rate remained low. Finally, the best degumming effect was achieved by combining the ELT system with the enzyme compounding system. The final optimized process significantly increased the lignin removal rate and fiber quality, while improving fiber dispersion and surface smoothness. It was shown that the stepwise removal of hemicellulose, lignin, and pectin significantly promoted the overall degumming effect, especially the removal of pectin and hemicellulose promoted the lignin degradation better than the lignin removal promoted the other components.</p>