The Italian coach believes the midfielder is still in superb condition, and was pleased with the draw against Saint-Etienne.
The veteran midfielder, 37, featured for the full 90 minutes for the first time since his move to PSG back in January, and Ancelotti feels Beckham's display against ASSE was confirmation that he is still in fine shape physically.
"Beckham started for the first time in the league. He showed that he can play consistently for 90 minutes and that he's in good physical condition. He played a key role in directing play," Ancelotti said at the press conference.
PSG gave away a two-goal lead at the Geoffrey Guichard, but Ancelotti was nonetheless quite pleased at full time.
"The final result is rather good. A five point lead at this stage of the season is very good. After this encounter with a dangerous opponent, it's good for us.," he added. "It was a physical game with a lot of contact. It was no doubt difficult for the referee to always make the right decision."
PSG sits top of Ligue 1 with 58 points from 29 games.