The French giants were crowned Ligue 1 champions earlier this month.
That was his sixth trophy since being hired by PSG, following spells with Almeria, Valencia, Spartak Moscow and Sevilla, with whom he won three successive Europa Leagues between 2014 and 2016.
He informed his players of his decision this morning and announced the news at a press conference.
Emery confirmed his departure to the PSG players on Friday and told journalists: "We have five matches left to play, including the final of the Coupe de France". "I congratulate him for his investment in our project and I wish him, in the name of the club, lots of success in the challenges ahead".
"To achieve its number one objective, which is the Champions League, the club first of all needs to be strong in France", said Emery, 46. 'But my answer is always the same, I'm committed to this club.
"I'm very happy to have been given the opportunity to work here, it's been a great experience", Emery said.
"It was a hard time", the Spanish coach said Friday at a news conference. May 8, PSG could win another Cup. "I will see what is best for my future".