An information sharing system between a plurality of robot systems includes a plurality of robot systems, communicatably connected with each other through a network, and configured to be capable of presetting a given operation of a robot and repeating a correction of the operation, and a storage device, connected with the network and configured to store corrected information containing corrected operating information that is operating information for causing the robot to execute a given operation corrected in at least one of the robot systems. Each of the plurality of robot systems shares the corrected information stored in the storage device and operates the robot based on the sharing corrected information.