Medical corpsmen are medical service staff in grassroots units. They play an important role in battlefield rescue, health and epidemic prevention, disease prevention and treatment, rehabilitation guiding and psychological counseling. American medical corpsmen have clear positioning, clear classification and complete training system, which are worthy of reference. This paper systematically reviews the classification and training mode of American medical corpsmen, compares and analyzes the current situation of our training mode, and puts forward opinions and suggestions on our military medical corpsman training in combination with the medical service reform under the new situation.