Aiming at the requirements of higher and higher automation and intelligence degree, higher and higher precision, and faster and faster support speed proposed by intelligent battlefield for equipment support, an intelligent after loading support system based on 3D printing is proposed. By analyzing the characteristics of high information integration, tight and fast battlefield rhythm, accurate and efficient damage in the future battlefield, and taking advantage of the high digitalization degree, fast printing and forming speed, and ready-to-use manufacturing of 3D printing technology, the after-loading support system that can adapt to the requirements of the future intelligent battlefield is constructed. The results show that the system can find out the problems of damaged equipment in the shortest time, and improve the efficiency and effect of equipment support.