The utility model relates to the technical field of power monitoring. The temporary support is used for outdoor shooting monitoring of a transformer substation. The device comprises a protective cover, a mounting plate, screw rods and stand columns, an elastic presser foot is mounted at the lower position of the stand column; a sliding groove is longitudinally formed in the middle of the outer surface of the stand column. The outer side of the stand column is sleeved with a mounting sleeve. the mounting sleeve is connected with the sliding groove in a sliding manner; the mounting sleeve is fixedly connected with the stand column through a locking bolt; fixing lugs are symmetrically mounted on the left side and the right side of the mounting sleeve, a fixing lug is mounted on the rear portion of the mounting sleeve, the three fixing lugs are rotationally connected with one ends of supporting legs through rotating shafts correspondingly, an adjusting box is mounted on the upper portion of the stand column, and a protective cover is mounted on the upper portion of the mounting plate. By arranging the protective cover, the lead screw and the stand column, the stability of the device isimproved, the application range of the device is widened, and the service life of the device is guaranteed.