It has been an utterly imperious campaign from the three-time defending champions, romping to success in early April.
PSG's win over Angers also saw them continue their quest for an unbeaten season, with 23 wins and five draws in 28 games.
Captain Marquinhos, who joined the club in 2013, becomes the only player in history to win 10 Ligue 1 titles.
"It's crazy, I'm really happy. Staying with a top team for so long is a real challenge. The titles will go down in history. Our ambition is to win everything," the Brazilian centre-back told beIN Sports.
"It hurts when you don't win the French championship, it's happened to me twice. The team deserves to win.
"It's in our DNA to give everything on the pitch, to have an aggressive philosophy, to get our shirts wet at every match, no matter who our opponents are. Ever since I was a kid, I've played in teams with that DNA," Marquinhos added.
Read a report from PSG's win over Angers here
Luis Enrique's side have received major plaudits this season for their move away from superstar names like Lionel Messi, Neymar and Kylian Mbappe, instead creating a team full of young stars and French players.
Playing a stunning brand of football, the likes of Vitinha, Bradley Barcola, and Desire Doue have all stood out, while Ousmane Dembele has enjoyed the best season of his career.
Check out our FlashFocus on PSG midfielder Vitinha
Dembele has scored 32 goals and provided seven assists in 40 games in all competitions this season, leading his side to the title and a spot in the Champions League quarter-finals.
Dembele was Flashscore's Player of the Month for February
PSG won't be satisfied yet, though, with the prospect of a historic treble on the cards.
After their Ligue 1 triumph, they resume their long-term goal of winning a first Champions League trophy, with a last-eight clash against Premier League outfit Aston Villa on April 9th and April 15th.
They then take on Reims in the Coupe de France final on May 24th.