Neymar as usual, will be the man to watch on Saturday despite PSG's team being so full of talent that Angel Di Maria can't even start for the side.
By PSG's standards, the club have endured a torrid week, suffering their first defeat in any competition this season to Strasbourg last weekend and then losing to Bayern Munich in the Champions League.
"For me, what's important is that we're playing at home".
Mbappe was lively for the entire 90 minutes and the France international ultimately got his goal after assisting Di Maria for the opener.
Lille lost possession in their own half, with Edinson Cavani and Di María then combining to set up Pastore, who lashed home from 14 yards. Overall, it was not the hosts' most impressive football and they were laboured at times against an unambitious visiting side.
Guido Carrillo scored twice in the final six minutes as Monaco came from two down to defeat Troyes 3-2.
4 - Unimaginative. Emery's persistence with Alves made no sense before the match and makes even less in retrospect.
Emery sent on Giovani Lo Celso for Adrien Rabiot at the start of the second half and he saw his side extend their lead in the 49th minute. A formation change could have benefitted his players more.
QSI, meanwhile, sacked their only previous coach to suffer three successive defeats, with Antoine Kombouare axed six years ago despite leading the league at the time.
"We will try to get something against Paris, but they have eight wins from eight matches at home, with an average of 3.5 goals per game, so it will be very, very difficult and we are expecting to suffer". But there was a late comeback of sorts from Lille.
Anwar El Ghazi provided late hope for Lille, but the result was never really in doubt, with PSG making it 32 Ligue 1 games unbeaten at home, including nine wins on the bounce, as Mbappe restored the two-goal margin of victory by rolling into an open goal.
That is now nine Ligue 1 Conforama wins out of nine at home for PSG this season.
Midfielder Marco Verratti said the players were backing Emery.
Javier Pastore doubled their advantage four minutes into the second half, punishing sloppy play at the back from the relegation-threatened visitors.