The utility model discloses a system used for guaranteeing high-voltage test safety. The system comprises an infrared detector (1), a front signal acquisition unit (2), a signal logical processing unit (3), a control signal output circuit (4) and a trip executive circuit (5), wherein the infrared rays of the infrared detector (1) are hermetically surrounded outside a high-voltage test region (6); the infrared detector (1) is electrically connected with the front signal acquisition unit (2); the front signal acquisition unit (2) is electrically connected with the signal logical processing unit (3); the signal logical processing unit (3) is electrically connected with the control signal output circuit (4); the control signal output circuit (4) is electrically connected with the trip executive circuit (5); and the trip executive circuit (5) is electrically connected with a boost control panel (7) used for controlling boosting of the equipment in the high-voltage test region (6). The system disclosed by the utility model can avoid the emergence of safety accidents in a high-voltage test.