For the metal plate with initial stress, the two kinds of dispersion equation for SH wave parallel or vertical to stress direction are derived. Based on the equations, the relationship between SH wave velocity and stress of plate is discussed. 利用各向异性板中的SH波理论,推得了在静应力作用下与应力平行和垂直方向的SH波的频散方程,讨论了金属薄板中SH波波速与应力的关系。