1. A robot system, characterized in that, it comprises: a primary robot and at least one secondary robot, wherein the primary robot and the secondary robot respectively comprise a control module, a storage module, a wireless communication module and an operation execution module, wherein the control module is connected to the storage module, the wireless communication module and the operation execution module, respectively, for controlling all parts to work coordinately; wherein the storage module is used for storing programs for simultaneous performance; wherein each said wireless communication module is used for enabling a communication connection between the primary robot and the at least one secondary robot; wherein the control module of the primary robot is used for requesting the secondary robot to report an ordered list of the programs, then comparing the received list with local stored program number after the primary robot and the at least one secondary robot establish a communication connection; the wireless communication module of the primary robot is further used for performing transmission of unstored program to and from the secondary robot; the control module of the primary robot is further used for determining under a default strategy, after the transmission of unstored program is finished, which simultaneous performance the robot system is going to give, and sending the number of the performance to be given to the secondary robot; wherein each said wireless communication module is also used for respectively resetting clocks to zero and establishing a reference point of synchronous clock signal of the primary robot and the at least one secondary robot after the control module of the primary robot sends the number of the performance to be given to the secondary robot; wherein each said control module is also used for reading and executing programs corresponding to the performance, and generating control signals of different time-points relative to the reference point of synchronous clock signal for the operation execution module; and wherein each said operation execution module is used for executing different performance actions according to the control signals of different time-points.