The former Oasis star said that the groups - who will be mentored by N-Dubz singer Tulisa Contostavlos - are the worst category of the series.
Gallagher told Digital Spy: "I watched this series for the first time this weekend. I'm usually quite good at picking who is going to go through, and I think I managed to pick them all correctly this time.
"The groups are f**king appalling; they really are f**king dreadful!"
The singer-songwriter continued: "The over 50s or 25s category are f**king sh**te too. It's only a TV show, though, and the whole thing is more like a soap opera with all their back stories and that carry-on.
"The live shows are when it's at its best and it's great Saturday night TV, especially when you've got an 11-year-old daughter. That show is her life!"
Gallagher recently admitted that he cannot discuss his brother Liam for fear of being sued.
He releases his new album Noel Gallagher's High Flying Birds on October 17.
> Noel Gallagher's High Flying Birds album: First listen
Watch the video for Noel Gallagher's new single 'If I Had A Gun' below: