对带衰减因子的谐波信号恢复提出一种有限脉冲设计法。通过设计一种特殊的脉冲信号，使原信号与该脉冲信号的卷积最快地衰减到零，实现信号的恢复。文中推导了算法，并进行了不同信噪比下的计算机仿真，表明该方法对信号恢复效果很好，特别是对信号频率估计尤佳。 A finite pulse design method for harmonic signal restoration with attenuation factor is proposed. By designing a special pulse signal, the convolution of the original signal and the pulse signal can be attenuated to zero as fast as possible to achieve signal recovery. The algorithm is deduced in this paper, and the computer simulations under different signal-to-noise ratios are carried out. The results show that this method is very effective for signal recovery, especially for signal frequency estimation.