Carroll has missed a sizeable chunk of football in recent seasons due to injury, but the target-man is starting to return to full fitness now.
The former Newcastle United striker has come back into first-team contention at West Ham of late, and he scored against Chelsea a fortnight ago.
And Merson said: “Andy Carroll should be in the England squad all day long, for me.
“If we’re going to win the Euro’s we need to play a Premier League way. Get the ball in the box, and these other countries won’t know what to do.”
Merson’s opinion on Carroll was backed up by Phil Thompson, who argued that Peter Crouch’s goalscoring record for England proves just how effective target-men can be at international level.
“Look at Peter Crouch’s record for England,” the former Liverpool player said. “These other countries don’t know how to deal with someone like that. Carroll might be that alternative.”
For Carroll to break into the England squad he will likely have to hit the back of the net on a regular basis until the end of the campaign.
At the moment, the 26-year-old still seems to be gaining match-sharpness - and has been overlooked in Roy Hodgson's latest squad - but there can be no doubting how effective he can be when firing on all cylinders.
Carroll has two goals in nine appearances for England to date, but he has not played for his country since 2012.