I am importing SVG-vector image to Illustrator and manually fix them. There are many bounding box (like art box) which will removed and after that there is many empty group exists. How to clean them? Is there way to automatically clean up empty groups in Illustrator?
In Illustrator, if you delete all of the elements of a group, the group itself is deleted. (you can see this in the Layers Panel.)
If you are referring to shapes with no fill or stroke, then you can find them by drawing a new rectangle with no shape or fill and using select / same / fill and stroke to select all shapes that match these criteria. Now you can delete them.