Bradley Barcola and Gonçalo Ramos scored to secure the win, with Barcola netting a header and Ramos adding a late goal from the penalty spot.
The victory sets up a crucial Champions League clash against Monaco in four days' time.
PSG 3-0 Metz: Les Parisiens Reclaim Ligue 1 Top Spot
PSG reclaimed first place in Ligue 1 with a 3-0 victory over Metz, taking advantage of Lens's earlier loss to Monaco.