Embodiments of the present disclosure provide an organic electroluminescent display panel, a display device, and a detection method. For the organic electroluminescent display panel, the light-emitting control lines include two first light-emitting control lines electrically connected to the two light-emitting control circuits; and each first light-emitting control line includes: a surrounding portion surrounding the hole area, and a connecting portion electrically connecting two ends of the surrounding portion to the two light-emitting control circuits, the connecting portion is electrically connected by a control component at a position of being connected to one light-emitting control circuit, and the control component is configured to disconnect the light-emitting control circuit from the connecting portion when defect detection is performed, to determine a cracking state of the hole area according to a light-emitting state of pixels driven by the connecting portion between the control component and the hole area.