The invention discloses an organic light emitting pixel drive circuit, drive method and an organic light emitting display panel. A first initialization module initializes the gate of a drive transistor; a second initialization module initializes the anode of a light emitting element; a threshold detection module is electrically connected with the gate of the drive transistor, and detects the threshold voltage of the drive transistor based on a signal on a light emitting control signal wire; a data write-in module is electrically connected with a data wire, and provides a signal on the data wire to the pixel drive circuit; a storage module is electrically connected between the threshold detection module and the source of the drive transistor, and stores the signal written from the data wire; the drive transistor generates drive current for light emission of the light emitting element based on a first power voltage end; the cathode of the light emitting element is electrically connected with a second power voltage end, and the light emitting element emits light based on the drive current. The solution can avoid the influence of the threshold voltage on the light emitting element, so that the working current for light emission of the light emitting element is kept stable, and the uniformity of brightness of the display panel is improved.