Conte was appointed as the Blues’ new permanent manager last week on a three-year deal and he will formally take over after the European Championships.
The Italy coach is renowned for having a fiery temper.
Henry worked under Conte for a short period when he was at Juventus before he joined Arsenal.
And he thinks that with Conte, it is very much a case of what you see is what you get.
“Chelsea’s players had better be prepared for some painful home truths when Antonio Conte arrives at Stamford Bridge,” Henry wrote in his column for the Sun on Sunday.
“Because that’s exactly what they’re going to get from their new manager.
Antonio Conte - 5 things you need to know
“Andrea Pirlo revealed that the first thing Conte said to the Juventus players when he was appointed as their coach in 2011 was: “When are you going to stop being so s***?”
“I don’t know if he’ll use exactly the same words at the Bridge but the sentiments will be identical because it’s astonishing how poor Chelsea have been this season.”