Computer simulation is a powerful tool for planning real evacuation scenarios during a crisis. In such context, emotion is a major factor that influences human decision making process and behavior. In this paper, we present our multi-agent simulation through the mathematical formalization of its main components: emotion and its dynamics, an heuristics for evasive actions of agents, the scenarios for tests and the results of theses tests. We show that on one hand, emotions increase the chaos of simulation which leads to an increase of collisions between agents, and on the other hand the evacuation time decreases because agents are more hurry to leave the place of the crisis.