The present disclosure discloses a circuit, a driving method thereof, a display panel and a display device. The circuit may include: a signal control module, a compensation control module, an initialization module, a data writing module, a driving control module, and a light emitting device. With the signal control module which is cooperated with other modules, the threshold voltage compensation time of the driving transistor can be increased, and the threshold voltage compensation can be ensured, thereby improving the image display quality.