In order to use the laser additivemanufacturing (LAM)techonology into the design and forming of the space vehicle structure more widely, based on the existing forming ability of the selective laser melting(SLM), the integrated design of the upper-stage cabin structure in the space vehicle was realized, the integrated model of the whole cabin structure was built, the scaling cabin structure was integrally formed, and in detail the design and forming integration was tested. The method of design and forming integration based on the laser additive manufacturing technology has been proven feasible, and the application of technology track in aviation and spaceflight field has been explored.