As an important member of the ocean unmanned warfare system,the unmanned underwater vehicle(UUV)has the advantages of good maneuverability,strong concealment,and high intelligence.It is widely used in military tasks such as intelligence reconnaissance,torpedo countermeasures,and anti-submarine warfare.Military UUV has become one of the hot equipment developed by military equipment in various countries.The development status,system composition,and key technologies of military UUV are mainly discussed,and its development trends from expanding its application scope and improving combat effectiveness is analyzed.