A pixel circuit, a driving method thereof, and a display device are provided. A driving sub-circuit of the pixel circuit is configured to provide a data signal from the data signal terminal to the driving node under the control of a driving signal from the driving signal terminal. A holding sub-circuit of the pixel circuit is configured to acquire a potential of the driving node under the control of a first switching signal from the first switching signal terminal, and maintain the potential of the driving node unchanged under the control of a first power signal from the first power signal terminal and a second power signal from the second power signal terminal. A light emitting sub-circuit of the pixel circuit is connected to the driving node and is configured to emit light under the driving of the driving node.