When providing medical services in infectious disease high-incidence areas such as Africa becomes a routine, the prevention and control of infectious diseases has become an indispensable part of hospital ship mission."Mission Harmony-2017" provided a 155-day medical service in seven African countries (Djibouti, Sierra Leone, Gabon, Congo[Brazzaville], Angola, Mozambique and Tanzania). We successfully completed the mission through active preparation before the departure, including carefully studying the prevalent trend of infectious diseases in these countries, disease screening and compulsory vaccination and drug prevention, and critical prevention and control during the mission (staff training, health and epidemic prevention and graded precaution). At last we achieved "zero" incidence of infectious diseases among mission personnel during the task. The prevention and control strategies for infectious diseases in this mission can provide experience for all kinds of personnel in areas with high-incidence of infectious diseases in the future.