A pixel driving circuit for driving a pixel unit comprises a light emitting element, an initial transistor, a drive transistor with a first gate electrode and a second gate electrode, a control transistor, a resetting transistor, a first storage capacitor, and a second storage capacitor. A gate electrode of the second initial transistor receives the second control signal, a source electrode of the second initial transistor is electrically connected to an anode of the light emitting element, and a drain electrode of the second initial transistor is electrically connected to a source electrode of the drive transistor.