Automobile tail LED light-emitting diode light bar convenient to disassemble and assemble

The utility model discloses an automobile tail LED light-emitting diode light bar convenient to disassemble and assemble, which comprises a main body assembly, a fixing assembly and a supporting assembly, the main body assembly comprises a light bar, a base and connecting seats, and the two connecting seats are symmetrically welded at the two ends of the base; the fixing assembly comprises first sliding blocks, a first sliding groove, a threaded hole, a threaded rod, a fixing plate and a handle, the first sliding groove is formed in the side, close to the base, of the upper surface of the connecting base, and the first sliding blocks are symmetrically bonded to the two ends of the light bar; first sliding blocks are symmetrically bonded to the two ends of the light bar, the first sliding blocks slide in first sliding grooves, due to the fact that the first sliding blocks and the first sliding grooves are the same in size, the first sliding blocks can only move upwards, a handle is rotated to drive a fixing pl