煤粉炉结渣的诊断和监控对防止严重结渣、优化吹灰及运行、提高锅炉运行的经济性等是十分重要的。通过分析炉内结渣对膜式水冷壁管温度场的影响，以及主要影响因素，找到了能够准确预测炉内结渣状况的一种新方法。该方法简单、实用，成本低，适合于已经投入运行且容易出现结渣情况的电站锅炉。 The diagnosis and monitoring of pulverized coal furnace slagging is very important to prevent serious slagging, optimize soot blowing and operation, and improve the economy of boiler operation. By analyzing the influence of slagging in the furnace on the temperature field of the membrane water wall tube and the main influencing factors, a new method for accurately predicting the slagging condition in the furnace was found. The method is simple, practical and low cost, and is suitable for power plant boilers that have been put into operation and are prone to slagging.