The invention discloses a pixel circuit, a driving method thereof, an organic electroluminescence display panel and a display device, comprising a data write-in module, a reset module, a first storing module, a second storing module, a light emission control module, a driving transistor and a light emitting device. For the cooperation of the above five modules, the working current of the light emitting device driven by the driving transistor in the pixel circuit can be made relevant only to the voltage of the data signal terminal and the voltage of the reference signal terminal, irrespective of the threshold voltage of the driving transistor. This can avoid the effect of the threshold voltage of the driving transistor on the working current across the light emitting device, thereby stabilizing the working current for driving the light emitting device and improving the brightness uniformity of the display area in the display panel.