The application discloses a pixel circuit and a driving method thereof, a display device. The pixel circuit includes a first through seventh thin film transistor, a light-emitting diode, a storage capacitor and a compensation module. A gate of the first thin film transistor is separately connected to a source of the third and fourth thin film transistor and one end of the storage capacitor, a drain of the fourth thin film transistor is connected to a reference voltage signal line; source of the first thin film transistor is separately connected to a drain of the second and fifth thin film transistor and a source of the seventh thin film transistor; a drain of the first thin film transistor is separately connected to a drain of the third thin film transistor and a source of the sixth thin film transistor.