Hi I have a Japanese Azlea which I got last year.
I have noticed that the root is pushing up to the surface. Is this normal? should I push the root back down into the soil or should I just leave it?

Azaleas have shallow roots, but none should be above ground. You should push it back down or cover it up with a little bit of soil...otherwise the root could dry out and possibly harm the plant.

Thanks Alankhart for the advise

If the soil the azalea is in is clay, it might not have enough drainage. I've planted azaleas and rhododendrons with as much as half of their rootballs above ground to provide better drainage. But you still need to cover the rootball well with mulch.