The embodiment of the application provides a performance testing system and method of a software-defined optical network. A problem that the existing technical testing scheme cannot verify the index in long-term running is solved. The performance testing system of the software-defined optical network comprises a testing controller, an instrument control proxy, and a data instrument. The embodiment of the invention further comprises a performance testing method of the software-defined optical network. The method is used for the performance testing system of the software-defined optical network provided by any embodiment of the application, and can initiate the connection establishment and deleting of single service, or can initiate the connection establishment and deleting of multiple services. The index of the stability and reliability of the controller in long-term running can be verified by use of the system and method provided by the invention.