Lloris turned in a disappointing performance against USA on Saturday, allowing a Julian Green effort to beat him at his near post, as Les Bleus struggled to draw 1-1 in their final friendly before the World Cup.
Deschamps believes Lloris retains an immense amount of quality, having carved out a career as Spurs' undisputed No.1 in the Premier League, but he believes he can still improve as the side prepares to head to Russia.
"Everyone will have their own analysis of Hugo's season," Deschamps told a post-match press conference.
"Yes, he made three errors with Tottenham that cost goals - (but) he played 60 games, he also earned points for Tottenham, as he made points for the team of France.
"Tonight, obviously he knows it, he can do better on the goal that we conceded, even if there is an error of Djibril Sidibe before.
"But I'm not here to question everything. He has a long, painful season, he's going to get on with it too."
Lloris helped Spurs finish third in the Premier League, conceding 36 goals in 38 games.