Under the background of "Double Tops" construction, China continues to increase its investment in international joint education of postgraduates, which is not only an important task of "Double Tops" construction, but also an important support to achieve the goals of "Double Tops" construction. In particular, under the background of the transformation of infrastructure construction from high-speed to high-quality development in China, the international joint education programs of civil engineering postgraduates bears a difficult task and is of great significance. In order to effectively realize the tasks and objectives of the international joint education of civil engineering postgraduates, the joint education should not only focus on the form and exist on the surface neither. It is necessary to make comprehensive efforts to further improve the system and mechanism of the international joint education program and steadily improve the education level of postgraduates from the aspects of education program, topic coherence, evaluation method, topic planning and management, and so on. In the paper, it focuses on the existing problems of the international joint education of civil engineering postgraduates under the background of "Double Tops". Through analyzing the existing postgraduate education programs and the personal feelings of more than 30 postgraduates with international joint education experience at the College of Civil Engineering in Hunan University, the above four aspects were studied, based on which the suggestions to ensure the quality of international joint education of civil engineering postgraduates and optimize the evaluation of international joint education outcomes were put forward.