The important principle of medical science research is the freedom of scientific research. The free education of scientific research for medical students is not only helpful to guide students to establish correct concepts of scientific research freedom, but also to promote the scientific development of medical undertakings.This article explains the Marxist concept of freedom, that is, the realization of the free and all-round development of human beings as the ultimate goal, based on the concept of freedom of practice based on the dialectical relationship between freedom and necessity.And as an effective reference for medical free education of scientific research，Reveal the freedom of scientific research to cultivate the medical students' spirit of free pursuit of truth; to guide medical students to respect the law of medical development; to enhance the scientific ethics of medical students as the core content; to carry out scientific research activities as an important carrier.