The metro system, which is the symbol of urban civilization, has become the focus of terrorist gangs and terrorists in creating terrorist incidents currently. This article counts 19 typical metro violent incidents that have taken place in the world since 2001, and analyzes the characteristics of the metro violent incidents in terms of attacking methods, attacking tactics, attacking locations and attacking time. Based on the theory of emergency management life cycle, we construct an emergency capability assessment index system of metro violent incidents, which includes terrorism prevention capability, terrorism dealing capability and terrorism resilience capability.