The present invention provides an organic electroluminescent display device and a method of repairing a defective pixel of an organic electroluminescent display device which can realize the repairing a defective pixel to a light emitting pixel by electrically separating a leak portion which generates a defective pixel. To be more specific, a peeling suppression layer is formed between an anode and an organic light emitting layer formed on a main substrate, and a cavity is formed between the main substrate and the peeling suppression layer due to the evaporation generated by an absorption of laser beams thus electrically separating a defective portion so as to repair a black-dot defective pixel to form a light emitting pixel.