Abstract: An automobile exhaust pipe tail diaphaneity dazzling structure provides an outer tube, an inner tube and a circuit board. A plurality of concave light convergence areas are provided on the outer tube with a gap each formed at where the light convergence area breaks away from the outer tube. The circuit board is fixed between the outer and the inner tubes and provides a plurality of light emitting diodes thereon. When the light emitting diodes are turned on, they give dazzling decoration effects to the exhaust pipe particularly during driving at night to alert approaching vehicles to achieve dual purposes of attractive appearance and safety.