在６００ＭＷ锅炉机组水冷壁热力试验的基础上，利用有限元分析的方法对低倍率锅炉膜式水冷壁管壁温度分布随传热工况的动态变化进行了分析。导致水冷壁管壁温度波动的最根本的原因是管内传热恶化；单面受热水冷壁在管内发生传热恶化时其向火侧管内外壁温差随时间的波动较小，而水冷壁周向温差则随向火侧外壁的壁温波动而剧烈波动。 Based on the thermal test of water wall of 600MW boiler unit, the dynamic change of the wall temperature distribution of the membrane wall with low-rate boiler wall according to the heat transfer condition was analyzed by finite element analysis. The most fundamental reason for the fluctuation of wall temperature in water wall is that the heat transfer in the tube is deteriorated. The temperature difference between the inside and outside wall of the fire side tube is less fluctuated with time when the heat conduction of single-side heated water wall deteriorates in the tube, while the circumferential temperature difference It fluctuates violently as the wall temperature of the outer wall toward the fire side fluctuates.