Minogue, who recently turned 39, stars on the British show with judges Louis Walsh, Cheryl Cole and Simon Cowell and she admitted there are constant arguments on set.
According to UK newspaper Daily Mirror, she said: 'There's a lot of bickering behind the scenes. Sometimes it spills over and you get upset.
'We are all theatrical darling, and when we get worked up on stage things come out.'
She added: 'This series is the most intense thing I have ever done. I can't keep up with all the arguments we are supposed to be having.'