The invention relates to the technical field of signal processing, and discloses a system for automatic correction of a broadband vector signal. The system includes a broadband vector signal generator, a high speed data acquisition module and a signal correction module, the broadband vector signal generator is formed by connecting a control upper computer with a vector signal modulator through a baseband signal generator, an output end of the vector signal modulator is connected with the high speed data acquisition module through a cable, an output end of the high speed data acquisition module is connected with the signal correction module through a PCI-Ex8 data interface, and an output end of the signal correction module is connected with the control upper computer of the broadband vector signal generator through an RS-232 interface, a USB interface or a LAN. The system for automatic correction of the broadband vector signal can automatically complete testing of the broadband vector signal generator and generation of a correction signal. Compared with a conventional correction system, the system provided by the invention is simple and clear, can save a large amount of time and manpower, reduces personal errors, and improves correction efficiency and correction precision.