The invention discloses a pixel circuit and a driving method thereof, a display panel, and a display device. The pixel circuit comprises a coupling control module, a driving module, a compensation module and a light-emitting device. Through mutual cooperation of the modules, the light-emitting device can be driven to emit light, the coupling control module couples signals of a light-emitting control signal terminal to a first electrode of a driving transistor at a coupling stage, the voltage of the first electrode of the driving transistor is increased, the driving transistor is prevented from being in a forward bias voltage in a long time, the time for characteristic recovery is provided for the driving transistor, the drift of a threshold voltage and the mobility change of the driving transistor can be rapidly recovered, display anomaly is avoided, and the display stability is improved.