In order to meet the needs of future information warfare and optimize the maintenance and support work of naval gun weapon equipment, the application of 4D printing technology in life cycle maintenance and support is discussed. The maintenance support of naval gun weapon equipment is advanced to the stage of demonstration and decision-making, and through the whole life cycle, the principle of 4D printing technology is analyzed, and the key issues of maintenance support are sorted out, in order to expand the maintenance support ideas of naval gun weapon equipment under the condition of information warfare. The results show that 4D printing technology can provide reference for relevant development departments and front-line combat units.