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Cellular forces are critical for their collective migration on matrices of various stiffness and topographies. While migrating cells can align collagen fibers, it remains unknown whether such force requirement changes with pre-aligned fibers. On soft surfaces with aligned collagen fibers, we discovered a new mode of fast collective cell migration that requires drastically lower traction forces, compared to surfaces without aligned fibers. Through monolayer stress microscopy calculations and a motor-clutch model, we further discovered that this novel mode of “fast and force-effective” collective cell migration is achieved by rapid stabilization of cellular contractile forces. Although high traction forces have conventionally been associated with fast cell migration, our findings show that aligned fibers relax that force requirement via fast contractility stabilization.细胞力对于细胞在不同刚度与形貌的基质（matrices）上的集体迁移至关重要。尽管迁移细胞可使胶原纤维发生对齐，但目前尚不清楚此类力需求是否会随预对齐纤维发生改变。在带有预对齐胶原纤维的软质基质表面上，我们发现了一种全新的快速集体细胞迁移模式：相较于无对齐纤维的基质表面，该模式所需的细胞牵引力（traction forces）显著更低。通过单层应力显微镜（monolayer stress microscopy）计算与动力-离合器模型（motor-clutch model）分析，我们进一步揭示，这种兼具快速性与力高效性的新型集体细胞迁移模式，是通过细胞收缩力的快速稳定实现的。尽管传统观点认为高细胞牵引力与快速细胞迁移密切相关，但本研究结果表明，预对齐纤维可通过快速收缩力稳定机制，降低该力的需求。