Alli has only played in seven Premier League matches, but Roy Hodgson has already rewarded him with a call-up to the Three Lions' squad for their Euro 2016 qualifiers against Estonia and Lithuania.
And Pearce has questioned the decision - stating that Alli should have progressed through the under-21 side before making the step up.
"It's too soon for me - for me he'd still be playing with the U21s now," he said.
"If you don't play him, or at least start him in one of the games, I'd question why he's with the seniors. He can be with the seniors to train, but send him back to the U21s on Tuesday and play 90 minutes for them. That's a trick that we miss on at international level at times."
Alli has onlyplayed for England's under-21 team twice in his career to date, but he has been fast tracked into Hodgson's squad.
This is partly due to injuries, but the 19-year-old's form has been so good in the Premier League that Hodgson has clearly found him too difficult to ignore.
Alli has played a key role for Spurs in the heart of their midfield, and rapidly established his place in Mauricio Pochettino's starting line-up since arriving at White Hart Lane over the summer.
The powerful midfielder has coped with the step-up to the Premier League with ease, and he will be hoping to make a similarly smooth transition to international football - allowing him to prove Pearce wrong.