If you are enquiring about AIIMS PG eligibility criteria, you need to complete your MBBS with a minimum aggregate of 55%. It is 55% for General Category, and OBC-PWD but 50% for SC.ST. Now this aggregate is calculated with the help of the marks that you scored in all the years of your MBBS. It is not 55% in 1st year, 55% in 2nd year and so on. It should be 55% on the entire course aggregate. For more information, please read our article: https://medicine.careers360.com/articles/aiims-pg-eligibility-criteria