Abstract: Experts participation in crisis management is determined by the following factors: lack of scientific knowledge of the public, division of labor brought by social function and formation of the democratic value of science and technology. In the process of the crisis management, experts' trust failure becomes a problem. Public tendency to idealize experts' knowledge, value preference of experts' knowledge, failure in guaranteeing the effectiveness of experts' participation and insufficient information transparency are the theoretical and practical causes of the trust failure. The paper puts forward some suggestions on regaining experts' trust authority: establishing the experts' personal information repository, enhancing the risk cost of experts being bribed and improving communication mechanism.