Provided is a system for verifying a vehicle-based communication service through simulation based on various environments. The system includes a first terminal configured to receive log data and output data from a vehicle terminal equipped in each of a plurality of vehicles, transmit the log data and a reproduction command signal corresponding to the log data, and display the output data and a second terminal configured to receive the log data from the first terminal to upload the log data, perform synchronization of a corresponding system time, and adjust a reproduction time of each of pieces of log data to a predetermined reference point according to the reproduction command signal.