The invention discloses an automatic debugging system for pumped-storage-power-station control software and a method. The method includes the steps that a testing initial scene is generated; a related event is generated, and the effectiveness of a control strategy is verified; an abnormal signal is generated, and the effectiveness of a security strategy is verified. According to the automatic debugging system for the pumped-storage-power-station control software and the method, in the application background of the high reliability requirement of the pumped-storage-power-station AGC/AVC control software, the factors such as an operating mode set, an optimizing strategy set, a working scene set and an abnormal signal set are abstracted and defined by analyzing the debugging standard and summarizing artificial debugging experience, the factors are organically combined with the scene method, the working scene set is optimized and generated with the orthogonal experiment design method, batched, automatic, full-power-range and full-switching-procedure automatic debugging is achieved, the testing efficiency and the debugging efficiency of the pumped-storage-power-station control software are effectively improved, and the operation security of the pumped-storage-power-station AGC/AVC control function is improved.