The levee engineering is the most important part of flood control system in China, the existing levee engineering has many uncertain facts in technology, economic natural and social environment. The risk factors are interdependence and interaction, and which are hard to quantization, at the same time, to considerate the uncertainty and fuzziness of judgments to the influencing factors made by the people, a risk analysis method based on analytic network process and triangular fuzzy number is built in the paper, and also a detailed exposition to the solution of the model. In the end, its rationality is confirmed by a case, and the result shows that fuzzy-ANP can treatment the complex effect between each risk factors and which can provide the important basis to the risk control and management to levee engineering. [ABSTRACT FROM AUTHOR]