本文针对西藏重点城市防洪现状以及存在的问题．在调查研究的基础上，收集了许多珍贵的资料，进行了具体分析和论证，指出了城市防洪河段的病、险、危处，以及西藏主要河流防洪能力的论述，对于我区城市防洪工作给予充分认识，为防汛和有关部门提供了防洪及河道治理的参考意见。 This article aims at the current situation and existing problems of flood control in key cities in Tibet. On the basis of investigation and research, many precious materials were collected, and specific analyses and demonstrations were carried out. The diseases, risks, and dangers of flood control river sections in cities and the discussion of the flood control capabilities of major rivers in Tibet were pointed out. Give full understanding and provide reference for flood control and river management for flood prevention and related departments.