The four military medical universities include the First Military Medical University (now Southern Medical University), the Second Military Medical University (now Naval Military Medical University), the Third Military Medical University (now Army Military Medical University) and the Fourth Military Medical University (now Air Force Military Medical University). In terms of strength comparison, the Air Force Medical University is considered to be the strongest among the four military medical universities, followed by the Naval Medical University, then the Army Medical University, and finally the Southern Medical University. Specific to the advantages of each school, the clinical medicine of Air Force Medical University is a world-class discipline, and its stomatology is A+, while clinical medicine, public health, biology and pharmacy are B+ 1. The nursing of Naval Military Medical University is A+, the basic medicine and pharmacy is A-, and the clinical hygiene is b+ 1. The Army Military Medical University is relatively weak. In addition