The invention discloses a testing tool, and the testing tool comprises a supporting plate, a supporting column, and a pedestal. The supporting plate is used for setting up test cables, and is provided with a separating part which is used for separating the adjacent test cables, so as to prevent the adjacent test cables from interfering with each other when the test cables are electrically connected. The upper end of the supporting column is connected with the supporting plate, and the supporting column is used for supporting the supporting plate away from the ground, thereby enabling the test cables on the supporting plate to be away from the ground by a certain distance, enabling the cable between the two adjacent testing tools not to contact with the ground, and reducing the impact on the safety of equipment and workers from a temperature rise test process. The pedestal is connected with the lower end of the supporting column. According to the scheme of the invention, the testing tool for a temperature rise test can enable the test cables to be supported away from the ground, and prevents the test cables from contacting with the ground, thereby preventing the test cables for discharging to the ground, protecting the equipment and workers, and improving the safety of the temperature rise test.