用一维多群辐射输运程序对Ｘ光加热金平面靶的物理过程进行了数值模拟，计算出了Ｘ光再发射延迟时间，与最近的双盘靶测得的再发射延迟时间的实验结果相当吻合。在各种因素的影响下，Ｘ光各能区再发射的延迟时间的变化趋势与实验结果一致的。这说明这个一维多辐射输运程序可以较好的模拟Ｘ光打击平面靶的实验结果。 A one-dimensional multi-group radiation transport program was used to simulate the physical process of X-ray heating of gold plane targets. The experimental results of the X-ray re-emission delay time and the re-launch delay time measured by the nearest dual-disk target Quite consistent. Under the influence of various factors, the change trend of the delay time of re-emission of X-ray energy regions is consistent with the experimental results. This shows that this one-dimensional multi-radiation transport program can better simulate the experimental results of X-ray planar targets.