The properties of spontaneous emission depend not only on the relative position of the resonant frequency from the edge of the photonic band gap and the photonic mode density but also on the relative distance of the atomic space position from the sidebrand . and we study other property of spontaneous emission 其性质除了依赖于原子上能级与光子频率带隙边缘的相对位置或光子态密度,还依赖于原子的空间位置与侧支距离。并对原子的自发辐射的其它特性进行了分析。