Various novel strategies and tactics and high-tech weapons have made the modern warfare extremely cruel and complicated, which consequently leads to acute increase of combat stress reaction and psychological disorders among soldiers. With the diversification of modern war demands and military tasks, the mental health care needs of the Navy have become increasingly prominent. Although the research on military mental health started late, substantial progress has been achieved in recent years, and initial progress has been made by a variety of measures, which directly provide reference for the mental health care of the Navy. It is suggested that the navy mental health care should be vigorously carried out by normalizing the navy mental health care units of all levels, building a unified psychological assessment platform, strengthening psychological training during peacetime, and emphasizing military post-traumatic stress disorder research and emergency treatment of traumatic stress during wartime, so as to improve the war capacity of our troops.