本文用几种不同的方法讨论了震源应力场的能量、应力与应变量值。认为震源应力场的初始应力量值与震级无关,主要依赖于真实地质体中岩石的剪切强度和断层面上的静摩擦力值;震源断层附近的应变量值约在10~(-3)～10~(-4)之间;应力降的数值很小,与震级关系不大。根据本文的计算结果,一般地震效率在0.05～0.15之间,能量释放率在0.04～0.12之间。 In this paper, the energy, stress and strain values ​​of source stress field are discussed in several different ways. It is considered that the magnitude of the initial stress of the source stress field has nothing to do with the magnitude, which mainly depends on the shear strength of the rock in the real geological body and the static friction value on the fault plane. The strain value near the fault source is about 10 ~ (-3) ~ 10 ~ (-4) between; the value of the stress drop is small, little relationship with the magnitude. According to the calculation results of this paper, the general seismic efficiency is between 0.05 and 0.15, and the energy release rate is between 0.04 and 0.12.