引入正交偶相干态的概念，将计算过程转换成相干态的基本计算，得出光子湮灭算符ｍ次幂ａｍ的实部算符Ｘｍ和虚部算符Ｙｍ在正交偶相干态下的不确定关系和量子起伏规律。对ｍ取值按ｍ＝４ｋ（ｋ＝１，２，３，…），ｍ＝４ｋ＋１（ｋ＝０，１，２，…），ｍ＝４ｋ＋２（ｋ＝０，１，２，…）和ｍ＝４ｋ＋３（ｋ＝０，１，２，…）等４种情况进行了较为详细的计算和讨论，分别得出了在这４种情况下正交偶相干态的ｍ阶压缩特性。结果表明，正交偶相干态仅存在ｍ＝４ｋ＋２阶压缩。 In this paper, the concept of orthogonal even -phase coherent states is introduced to convert the calculation process into the basic calculation of coherent states. The real operator Xm and the imaginary operator Ym of photon annihilation operator m are obtained. Uncertainties and Quantum Fluctuations. For m, m = 4k (k = 1, 2, ...), m = 4k + 1 (k = 0,1,2, ...), m = 4k + 2 m = 4k + 3 (k = 0,1,2, ...) are calculated and discussed in detail. The m-order compression characteristics of the orthogonal and evenphase coherent states are obtained respectively. The results show that there are only m = 4k + 2-order compressions for the orthogonal couple states.