Controlled demolition of concrete is one of the important and difficult problems in construction of reconstruction projects and expansion projects of hydropower projects . Based on systematic analysis of technologic requirements of controlled demolition of concrete , advantages , application conditions and implementation key points are summarized . That' s the selection criterion system of construction methods for controlled demolition of concrete . And the system is applied in Danjiangkou Dam heighting project of median- line of South- to- North Water Transfer Project . The final implementation effect is satisfying . The selection criterion system of construction methods for controlled demolition of concrete and representative successful implementation cases in Danjiangkou Dam heighting project will be helpful for similar projects in the future.