根据作者提出的能量关联度理论，探讨了多维时间序列的周期分析问题，互能量关联度的计算及频率域上主要影响因素的提取，结合实例验证了理论和方法的可行性

This paper, based on the writer's theory on energetic relevant degree, inquires into the subject of multi dimensional time series periodic analysis, the calculation of interrelating energetic relevant degree and the draw of main influence factor in the frequency range. Through combining practical examples, it demonstrates the feasibility of the theory and method.