After you create or edit an ad or extension, the review process begins automatically. All content in your ad is reviewed, including your headline, description, keywords, destination and any images and video. During this process, the ad’s status will be "Under review".
If your ad passes the review, its status will change to "Approved", and it will start to run. If the review indicates that your ad violates a policy, its status will change to "Disapproved", which means it can’t show anywhere. You’ll be notified of the policy violation and told what you can do next.