A pixel circuit and a driving method therefor, and a display panel. The circuit comprises: a node control circuit (11), a driver (12), a display sub-circuit (13), a threshold compensator (14), and a resetting device (15). The node control circuit (11) is configured to output a voltage (Vref) of a reference voltage terminal to a first node (N1), or output a voltage (Vdata) of a data voltage terminal to the first node (N1); the driver (12) is configured to output a drive current; the display sub-circuit (13) is configured to display a gray scale; the threshold compensator (14) is configured to adjust a voltage of a second node (N2) to the sum of a voltage (V1) of a first level terminal and a threshold voltage of the driver (12), and adjust the voltage of the second node (N2) to a difference between the sum of the voltage (V1) of the first level terminal, the threshold voltage of the driver (12), and the voltage (Vref) of the reference voltage terminal and the voltage (Vdata) of the data voltage terminal; and the resetting device (15) is configured to reset the second node (N2) and the display sub-circuit (13).