Melbourne University is one of the oldest and most prestigious universities in Australia and one of the top universities in the world. It has several ace majors. Here are some of them:

1. Medicine: Melbourne University School of Medicine is one of the best medical schools in Australia, and its medical specialty ranks among the best in the world. The college provides comprehensive medical education and trains students to become excellent doctors and researchers.

2. Business: The University of Melbourne Business School is one of the best business schools in Australia, and its business major is also among the best in the global rankings. The college provides comprehensive business education to train students to become successful business leaders and entrepreneurs.

3. Engineering: The School of Engineering of the University of Melbourne is one of the best engineering schools in Australia, and its engineering specialty is also among the best in the global rankings. The college provides comprehensive engineering education and trains students to become excellent engineers and scientists.

4. Law: The University of Melbourne Law School is one of the best law schools in Australia, and its law major is also among the best in the global rankings. The college provides comprehensive legal education and trains students to become excellent lawyers and legal professionals.

5. Humanities: The University of Melbourne is also very strong in humanities, including history, philosophy, literature and other majors. These majors cultivate students' critical thinking and analytical ability and lay a solid foundation for their success in various fields.