Although the crime of disobeying the duty in Criminal Law requests the public servant to be the actor as one of the fundamental concepts, there are certain restrictions on the qualification of the actor according to the types of malfeasance related to disobeying the duty, instead of merely taking the concept of the public servant as the actor directly. However, the qualification of the actor in the crime of the public servant's neglecting the duty leading to the disaster is that the public servant should have the obligation to prevent and curb the disaster from happening, while the specific qualification about the identity of the actor is not clear due to the mutual unclear concept of the disaster. Because the problems about neglecting the duty leading to the disaster are increasing day by day, the survey of this crime has its practicability.