The paper is aimed to make a general introduction and investigation of the idea of the so-called post-normal science and the integrated risk governance and the latest advances of the idea in the world as well as in China.

Variable fuzzy sets and their application to comprehensive risk evaluation for flood-control engineering system;

"Risk Government" originates from the international background of risk society and our country s condition that comprehensive risks become more and more.

Considering the problems of slow convergence speed and local minimum existing in the BP algorithm, chaos theory in combining with artificial neural network is used to structure chaos learning algorithm and to establish a new comprehensive risk evaluation model based on Chaos Neural Network.

A suggestion on construction of integrated risk management system in China;

Design of integrated risk distribution mechanism of construction diversion system;

Structure and evaluation of integrated risk for flood disaster(Ⅱ)——microstructure;

See from the form,the performances that the board of directors governance risk to executive are the risk of constructing board of directors oneself,the board of directors decision and control risk to executive,and the executive s poerating risk etc.

Risk regulation is an important means of risk governance in modern society,and it is the greatest advantage for government to implement risk governance.

In recent years,the relationship between risk governance and democracy is a hot topic in the Western academic world.

In order to get an effective governance of risk society,people have to consider and design some principles,measures and methods of risk governance from strategic perspectives.