A system analysis model for dike engineering based on Hall three-dimensional structure was proposed and a technical framework for risk assessment and management of dike engineering during the whole process of design-construction-operation was established. The scope definition in risk analysis, identification of risk factors and working key points in risk factors analysis were clarified. Three key reasons for dike-break in the risk analysis were addressed. The methods for calculating the risk rate and assessing the dike-break risk applicable to different stages were discussed. The risk evaluation and benefit analysis of dike engineering corresponding to different stages were analyzed. The technical processes and implementation points for solution selection and countermeasures for risk control, dynamic monitoring and information feedback were also discussed. The obtained workflows and technical solutions for risk assessment and management of the dike engineering during the whole process of design-construction-operation are expected to be gradually applied and developed in practice.