The purpose of the present invention is to provide a probe data collection method which is capable of both ensuring that probe data is collected in realtime and reducing server communication load. Onthe basis of received probe data, the total number of vehicles which have transmitted the probe data and the upload times of the probe data for each vehicle (30) are detected, and on the basis of thedetected upload times, correction values of the upload times are computed for each vehicle (30) according to the total number of vehicles. The computed correction values are transmitted to the respective vehicles (30).