The invention provides a cluster risk avoiding method, a system, a computer readable storage medium and a server. The cluster risk avoiding method comprises the steps of obtaining geographical location information of a disaster area, the position information of all vehicles in the disaster area; depending on location information of a vehicle, clustering vehicles, dividing all vehicles into a plurality of area classes; circularly executing the operation of electing a leader from each region class; planning an optimal escape route for the leader by taking other vehicles in the area class as followers, and planning an escape route for all followers according to a preset escape rule by taking the optimal escape route of the leader as a reference until all vehicles reach a safe area. Accordingto the cluster risk avoiding method and system, the computer readable storage medium and the server, all users in one cluster can be guided to quickly and orderly leave a dangerous area when facing sudden situations such as natural disasters, so that the life and property safety of the users is guaranteed.