China has entered a “high frequency phase” of public crisis events at present. It is essential for the promotion of the government public crisis management system to build a scientific and rational evaluation index system of public crisis pre-warning capability. The article analyzes public crisis pre-warning capability and points out that public crisis pre-warning information management system and supporting system are two major components. In the end， the article builds the evaluation indicator system of the public information pre-warning capacity， containing three levels of the target layer， rule layer， the index layer and a total of 16 indicators according to the two aspects of government and the public， from the perspective of the public crisis information pre-warning management.