This paper analyzes the application of artificial intelligence technology in the aerospace field, discusses the introduction of advanced generative AI technology to improve the reliability and efficiency of aerospace model development. Generative AI technology can automatically generate diverse and high-quality models by simulating human creativity and imagination, providing great convenience for the development of aerospace models. By utilizing this technology, we can quickly generate multiple design solutions and select the model that best meets practical requirements through comparison and optimization. This not only greatly improves the efficiency of model development, but also effectively enhances the reliability of the model. However, how AI technology can be closely integrated with spacecraft development needs to be further studied. This paper gives new technologies that need further research and exploration in the in-depth application of generative AI technology in the aerospace field, so as to provide a new perspective and method for the development of aerospace model development reliability technology.