在计算脉冲星时间尺度时一般沿用现有的经典原子时算法，采取在时域统一加权的方法，然而不同的脉冲星短期稳定度和长期稳定度截然不同，采用此种加权方法不能兼顾脉冲星在不同频率范围内的不同稳定度。采用小波分解算法可以考虑脉冲星在不同频率范围的不同稳定度。实验结果表明：用这种算法计算的脉冲星时间尺度稳定度有显著提高。 In the calculation of the time scale of the pulsars, the existing classical atomic-time algorithm is generally used, and the method of uniform weighting in the time domain is taken. However, the short-term stability and long-term stability of different pulsars are completely different. Different degrees of stability in different frequency range. Using wavelet decomposition algorithm can consider different stability of pulsar in different frequency range. The experimental results show that the stability of the time scale of the pulsar calculated by this algorithm is significantly improved.