Starting from the Klein-Gordon equation near the event horizon,we exactly determine the Hawking temperature and radiation spectrum of a general spherically symmetric and charged evaporating black hole.

• 从视界附近的Klein Gordon方程出发 ；准确地定出了一般球对称带电蒸发黑洞的Hawking温度和辐射谱 ；同时计算出事件视界方程 .