Medical geographic information plays an important role in prevention, treatment, rescue and delivery of the wounded, prevention and control of diseases, and supplement and use of medicines and equipment. We collected and collated the natural geography, social geography, medical geography and military geographic information of 181 coastal countries and regions in the world, and constructed a global naval medical geographic information database. This database can provide fast and efficient information support and decision support, and contribute to implementing naval medical support timely and effectively and promoting the comprehensive development of China's naval health services.