Null object anchor point not following the parent image anchor point

>>i have this image with a null layer attached but when i move the position of the image the null layer doesnt follow<<

If the null is the parent, the image would follow the null not the other way around.

When you have a parent layer the parent becomes the anchor point the children rotate around, so the images would rotate around the null's position on screen.

If you are trying to make the null rotate the image around it's own center I wouldn't use the  parent function I would just link the image's rotation to the nulls.

Linking properties

Click and drag the spiral to the right of a property to another visible property on the timeline.

Though I may be misunderstanding what you are trying to do.