The business scope of the industrial and commercial business license is permitted, and it cannot be convicted of smoking ban. If an enterprise does not have a license to operate a certain business within the business scope of the industrial and commercial business license, it may be convicted according to law. In this case, the behavior of enterprises belongs to illegal operation, not smoking ban. Illegal business operation means that an enterprise conducts business activities without obtaining relevant administrative license or violating administrative license, rather than absorbing relevant content, and it means that an enterprise engages in illegal activities in a certain business activity. Therefore, if an enterprise still engages in this business without permission within the business scope of its industrial and commercial business license, it may be investigated for relevant responsibilities according to law.