The invention relates to a bug automatic repair method and system. The method comprises the steps that bug repair codes are stored into a main system codebase in a cloud platform test system; a main system repair platform receives bug repair information sent by at least one subsystem and sends the information to the main system codebase; after the main system codebase receives the information, thecodes corresponding to the information are called and sent to the main system repair platform; and the main system repair platform receives the bug repair codes and then sends the codes to the subsystems. The invention furthermore relates to the system. The system comprises the system codebase, the main system repair platform and the subsystems. Through the bug automatic repair method and system,secure bugs in software can be repaired quickly and effectively in time, manpower is saved, the secure bugs in the software are repaired timely, efficiently, rapidly and effectively, and meanwhile the security of a software system is protected.