Abstract: Nanocomposite Nd₈Fe₇₃Ti₂Zr₂B_13.6C_1.4permanent magnetic ribbons were prepared by meltspinning at different wheel speeds（V_s=6,8,10,12,15,18,20,30 m/s）and post annealing treatment. The results show that the ribbons consist of amorphous phase when the circumferential speeds V_s are more than 12 m/s.With the increase of the wheel speed,the magnetic coercivity of the annealed ribbon became worse.Optimum coercivity with H_ci=11114kA/m was obtained by annealing an as-spun sample（V_s=6 m/s）at 680℃ for 10 min.The remanence ratio and the magnetic energy product of the annealed ribbons were improved first and then decreased with increasing the wheel speed from 6 m/s to 30 m/s.The best remanence ratio and energy product were both got from the ribbon（12 m/s）annealed at 780℃ for 10 min:（J_r/J_s）=0.749;（BH）_m=84.6kJ/m³;H_ci=732 kA/m.