大模场光纤可以降低纤芯功率密度及提高非线性效应的阈值，是进一步提高光纤激光器功率的重要技术途径，但随着纤芯的增大，光纤中将产生多横模运转，降低光束质量。对国内外大模场光纤激光器中的高阶模抑制技术的研究进展进行详细的介绍。对大模场光纤激光器模式控制的发展前景进行了展望。

Large-mode field fiber can decrease the power density of fiber core and increase the threshold of nonlinear effect, which is the best candidate for high-power fiber lasers. However, an increase in fiber core size will lead to the multimode running and decrease of beam quality. The latest progress of high-order mode-suppression technology is introduced. The development trends of mode suppression technology are prospected.