The invention provides an OLED (Organic Light Emitting Diode) pixel circuit and a method of alleviating aging of OLED device. The OLED pixel circuit and the method of alleviating aging of an OLED device are characterized in that by setting a first sub-pixel driving unit, a second sub-pixel driving unit, a first reverse bias unit and a second reverse bias unit, and by matching with a simple control time sequence, a first light emitting diode and a second light emitting diode are not maintained in the direct current bias state; and the first light emitting diode and the second light emitting diode can emit light in an alternating manner in different frames, so that the light emitting time of the first light emitting diode and the second light emitting diode can be reduced, and aging of the first light emitting diode and the second light emitting diode can be alleviated, and the display quality of the panel can be improved.