The 16-year-old - who plays Hermione Granger in the hit films - has started complaining about her work and arguing with the film bosses.
Emma Watson is said to have confronted the director of 'Harry Potter and the Order of the Phoenix', David Yates, and asked him whether she was contractually obliged to do so many takes.
Yates - who prefers to do around 30 takes to get everything just right - politely told her "yes".
The young actress threatened to quit the Harry Potter series but was allegedly lured back with a £2 million contract to keep playing Hermione for the full seven films.
Emma said: "I've kind of come from nowhere and gone straight in at the top. Where do I go from here? I feel like I need to backtrack and work my way through again.
"I'd be really interested to kind of train properly because I feel I shouldn't be here. I should have done so much more."
But she denies money was the reason she considered quitting.
She said: "It was more about juggling my A-level exams, going to university and doing the movies."