Abstract: Based on the current situation and problems of performance management in hydraulic engineering,this paper takes Beijing as an example to built the output quality indicator system in the performance evaluation. Operation and maintenance are divided into seven parts,including water management,operation,security,inspection,emergency rescue,safety monitoring and maintenance. Index score is analyzed according to Delphi method,“one vote veto”and“ threshold rule”. The indicator system can not only make the index comparable and measurable but also enhance the operation and maintenance level in hydraulic engineering.