The red doctor spirit was formed in the great revolutionary practice led by the Communist Party of China and has the theoretical basis of Marxism. Among them, “political firmness and loyalty to the Party” embodies the ideals and beliefs of Marxism; “respecting life and healing the wounded and rescuing the dying” reflects the Marxist views on life and the masses; “working hard and selfless dedication” illustrates the philosophical principles, such as the relationship between matter and consciousness, social existence and social consciousness, and the spiritual and cultural conditions under which the masses create history; “technical excellence and the pursuit of perfection” demonstrates the principles and methods of emancipating the mind and seeking truth from facts, the role of science and technology as a driving force of historical and social development as well as the philosophical principle of the unity of truth and value. Carrying forward the red doctor spirit in the new era has important theoretical significance and practical value.