I am doing commercial arts.I would be working in the art department  when i pursue a job in advertising agency. Now how far is it worth to get a knowledge about the marketing and management in the field of advertising by doing MBA?

You are doing commercial arts.  Would be working in the art department. You can pursue the MBA and it will be useful when you want to have your own set-up later. The advertising business is such - most of the business is based on connections, interpersonal relations and high profile PR activity.  But still I advice you : 1. The art department is the heart of advertising - apart from marketing/ servicing. 2. While working there you will learn that - "Marketing and Management: what we read or heard are no way connected to any Ad agency, 3. But you will know the ropes and tricks which are not usually available or written in any book outside. 4. I suggest you work there and either working in the same co., or moving out to another co., try to handle  Art Department or become Art Director and then you will get to know many clients directly. 5. Alternatively - if you have the personality and pushing attitude and no question of any lack of self confidence and ready to take risks - but should have passion in advertising and marketing - then try for a marketing position there or look for a small company where you can act both designer as well as account manager. 6. MBA gives you just silver lining to your personality provided you have real passion and personality and good communication skills.  7. I suggest you go for MBA is PR which will take you to places. a good degree or diploma from a reputed institute where you get good connection also.