In recent years,with the rapid development of river basin economy and the continuous progress of social economy,the requirements of river basin engineering construction,drinking water security,river ecological security and other aspects are constantly improving.The comprehensive planning of river basin is a necessary means to effectively realize the comprehensive management of river basin and the stable growth of regional economy.The operation ability of GIS technology on data layer can provide powerful assistance and support for the formulation of comprehensive river basin planning to improve the planning precision,and realize the informatization and scientization of comprehensive river basin planning.