通过对超超临界锅炉水冷壁爆管事故原因进行了分析，介绍了事故的处理经过，指出受热面管堵塞是造成管子超温爆管的根本原因，重点分析了受热面管堵塞爆管的各种影响因素，针对性地提出了解决措施。“,”The cause of tube rupture of power plant boiler was analyzed, introduced the disposal measurement of the problem, and pointed out the tube jammed was the cause resulted in tube rupture. In addition, several inlfuence factors of tube rupture were discussed strictly, resolve measurement were presented speciifcally.