The match between the holders of Serie A and the Coppa Italia saw Napoli twice lead only for the Italian champions to recover strongly to claim victory in the season curtain-raiser.
Edinson Cavani gave Napoli the lead on 28 minutes at the Bird's Nest stadium - scene of the 2008 Olympic Games - only for Kwadwo Asamoah to drag his side level with a blistering shot from distance nine minutes later.
Goran Pandev lifted the ball over Gianluigi Buffon to hand Napoli a 2-1 lead four minutes before the break, but Juventus equalised courtesy of Arturo Vidal's 73rd minute penalty after Mirko Vucinic had taken a tumble under pressure from Federico Fernandez.
Napoli went down to ten men when Pandev saw red on 85 minutes for appearing to say something to a linesman. That became nine when Juan Camilo Zuniga encountered a second yellow three minutes into stoppage time after mistiming a tackle on Giovinco.
Napoli coach Walter Mazzarri was also red carded for dissent before Juventus put the match to bed with Christian Maggio somehow nodding an Andrea Pirlo free-kick into his own net on 97 minutes.
Vucinic put a gloss on the scoreline when he nudged the ball over the line from Claudio Marchisio's long ball on 101 minutes.
- Goran Pandev