Edinson Cavani scored twice and played a part in another as PSG cruised to their seventh win in seven Ligue 1 matches this season with a 4-1 drubbing of Reims.
Cavani netted in the fifth and 44th minutes and won a penalty which Neymar converted in the 24th in a fine display at the Parc des Princes on Wednesday.
Thomas Meunier's 55th-minute strike caped the scoring on the night. Xavier Chavalerin had given the visitors a brief lead in the second minute.
The lopsided victory gives Thomas Tuchel's men 21 points from a possible 21, eight ahead of second-placed Lyon.