介绍承德市热电厂CG35／3.82-MX型循环流化床锅炉在运行过程中产生的出力低、运行效率下降、磨损严重、结焦、爆管等一系列问题。根据几年来的实际运行经验，经过认真分析，找出了其产生问题的原因，并对锅炉结构进行了大幅度的技术改造。改造后出力达到额定值，且运行效率大大提高，节约了能源消耗，取得了良好的经济效益和社会效益，达到了锅炉改造的目的。 This paper introduces a series of problems such as low output, bad operation efficiency, serious wear and tear, coking and burst pipe in CG35 / 3.82-MX circulating fluidized bed boiler of Chengde Thermal Power Plant. According to several years of practical experience, after careful analysis, to find out the cause of the problem, and the boiler structure has been a substantial technological transformation. After transformation, the output reaches the rated value, the operating efficiency is greatly improved, the energy consumption is saved, the good economic and social benefits are achieved, and the purpose of boiler reconstruction is achieved.