High-temperature-resistant circuit board

The utility model discloses a high temperature resistant circuit board, which relates to the circuit board field, and comprises a main circuit board and an auxiliary circuit board, the side edge of the main circuit board is provided with a circular groove, the surface of the auxiliary circuit board is fixedly provided with a circular rod, the circular rod is clamped in the circular groove, and a rotating device is arranged between the main circuit board and the auxiliary circuit board. According to the high-temperature-resistant circuit board provided by the utility model, through the arrangement of the main circuit board and the auxiliary circuit board, a plurality of electrical elements are closely arranged together, and under the condition that the electrical elements work simultaneously, a lot of heat is generated, so that a lot of heat is gathered on the surfaces of the main circuit board and the auxiliary circuit board; therefore, when the electrical elements on the surfaces of the main circuit board an