Abstract: A robot system and a simultaneous performance control method thereof, comprising a primary robot and at least one secondary robot. Both the primary robot and the secondary robot respectively comprise a control module (101), a storage module (102), a wireless communication module (103) and an operation execution module (104). The control module (101) is connected to the storage module (102), the wireless communication module (103) and the operation execution module (104), respectively. The robot system and the simultaneous performance control method thereof can implement automatic performance of multiple robots, reduce dependency on a user, and function as a learning tool to provide a lifelike language learning environment for a learner.