The hosts beat South Korea 4-0 at a packed Parc des Princes.
Corinne Diacre's side is the favourites to win the eighth edition of the competition.
At half-time, they were leading 3-0 thanks to Eugenie Le Sommer's early opener and two headers from defender Wendie Renard.
Midfielder Amandine Henry scored in the 85th minute to seal the victory for the hosts.
VAR is being used in the Women's World Cup for the first time but the French fans booed in frustration at both the length of time it took to review footage.
Today in Group B action, Germany take on China while Spain face South Africa and in Group A fixture Norway play Nigeria.
Meanwhile, reigning champions United States will get their campaign underway against Thailand on Tuesday.

Raphinha, Fermin score as Barcelona beat Athletic in home opener
Chelsea and Fulham reach League Cup third round as Welbeck scores on debut
PSG to meet Barca, Man City as Champions League draw throws up marquee ties
Abbas gives Pakistan slight edge as England battle back at Lord's
UEFA suspends FIFA boycott threat but steps up pressure on world body