A simulation apparatus and a distribution simulation system are disclosed. The simulation apparatus, according to one example, includes a simulation executer configured to execute a simulation task, a data storage configured to store data related to the simulation task based on a data storage policy that is set in advance of the execution of the simulation tasks, and a data updater configured to update the data stored in the data storage to most recent data by comparing the data stored in the data storage with data stored in another simulation apparatus.