In this study,magnetostrictive fiber/polymer composites are developed for the first time by embedding continuous Fe-Co fibers in an epoxy matrix,and their stress-rate-dependent energy harvesting characteristics are studied.Compression tests are first conducted to measure the output voltage of a sample.A simple nonlinear magnetomechanical coupling model of a magnetostrictive fiber/polymer composite is then established,and the effective magnetoelastic constant are predicted.The results show that the output voltage density of this novel Fe-Co fiber/polymer composite dramatically increases with increasing stress-rate and becomes larger than that of Galfenol.