Disclosed are a pixel circuit and a driving method therefor, and a display device. The pixel circuit comprises a data writing sub-circuit, an initialization sub-circuit, a light emission control sub-circuit, a driving sub-circuit, and a light emitting sub-circuit; the data writing sub-circuit transmits a data signal to the driving sub-circuit; the initialization sub-circuit transmits an initialization signal to the driving sub-circuit; the light emission control sub-circuit transmits a power supply voltage signal to the driving sub-circuit; the driving sub-circuit performs voltage initialization, stores a driving voltage, and transmits the power supply voltage signal to the light emitting sub-circuit; and the light emitting sub-circuit emits light on the basis of the power supply voltage signal. According to the pixel circuit and the driving method therefor and the display device in embodiments of the present application, uniformity and uniform display of brightness can be ensured.
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