The dynamic duo gave the money after hearing warm-up man Ian Royce was in trouble.
The Mirror reports that Ian, 50, worked on both BGT and The X Factor and is claimed to be good friends with the pair.
But when he suffered a brain aneurysm when drunk, he asked for £20,000 to go to famous rehab centre The Priory to help sort out his problems.
It’s claimed that Ant – who has battled his own demons in the past year – and Dec pledged thousands on Ian’s GoFundMe page.
The page – set up by a friend – said: “Ian is in desperate need of our help. He is an alcoholic and has taken his first steps by admitting so.”
Thanking Ant and Dec on Twitter, Ian wrote: “Thank you Ant for your generous donation for getting me well..Amazing @antanddec xxx.
“Thank you Dec as well for your donation..Love you @antanddec.”
Thank you Dec as well for your donation..
Love you @antanddec
— Ian Royce (@officialroycey) September 30, 2019
The boys recently shared a selfie from a production meeting at ITV for the new series.
The pair shared the snap, which showed them with excited expressions in front of screens and laptops with the I’m a Celeb logo on.
They captioned the image: “At @itv having meeting about @imacelebrity. Finding out what’s in store and this years celebs….”
Elsewhere, Ant and his girlfriend Anne-Marie Corbett are reportedly about to take a huge step in their relationship.
Ant will be heading back to I’m a Celebrity after missing last year’s series as he battled alcohol issues and prescription drug addiction, and Anne-Marie will reportedly be joining him.
According to reports, the presenter wants his 43-year-old girlfriend – who is also his sober coach – by his side while he films in Australia.
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