Harvard medical school studied for four years, and the students got their doctor's degree when they graduated.

During the study in medical school, the corresponding doctor qualification examination will also be carried out simultaneously, and excellent medical students can apply for double degrees of doctor of medicine and doctor of philosophy. The academic system of a doctor is four years, and the time to study for a doctor of philosophy depends on the time to complete the doctoral thesis. Generally, it takes 4-6 years to study for a doctor of philosophy alone, and the total academic system of a joint degree of a doctor of medicine and a doctor of philosophy is usually 7-8 years.