An AMOLED driving circuit and driving method adds an additional switching transistor to a 2T1C driving circuit. An additional switching transistor is connected to the high voltage source, a scan line and a node connected a source terminal of a driving transistor of the 2T1C driving circuit and the light-emitting device. The additional switching transistor and an original switching transistor of the 2T1C driving circuit are activated when the scan line outputs high voltage. At the time, a low voltage of a PWM voltage is added to the high voltage source not to drive the driving transistor, and a storage capacitor stores a voltage of the image data signal. When the two switching transistors turn off and a high voltage of the PWM voltage is provided to the high voltage source, the driving transistor is driven to generate a driving current to the light-emitting device.