Oled driving circuit and a driving method of compensating

The present invention relates to an OLED driver compensating circuit and a driving method. OLED drive compensation circuit includes: a drive module, which includes a driving transistor and a storage capacitor, a driving transistor through a first electrode, a second electrode power supply voltage terminal, connected OLED, a first terminal of the storage capacitor and the control electrode of the driving transistor is connected, a second terminal connected between the driving transistor and the OLED; external compensation module connected between the driving transistor and the OLED, a driving transistor and the second terminal connected to a storage capacitor electrode to provide a reference voltage, resetting the driving transistor and a voltage electrode connected to a second terminal of the storage capacitor; supply voltage terminal of the variable voltage source, which drives the external compensation module resets a second electrode terminal connected to the storage capacitance of the transistor input voltages the first voltage and the first voltage equals the reference voltage. The above mentioned OLED driving compensation circuit may obtain good compensation effect.