The construction of engineering case-base based on "Internet+" is crucial in terms of cultivating excellent engineering talents in modern higher education. Engineering case-base which is involved in professional degree education should meet the needs of being typical, objective, advanced and innovative. In this paper, the necessity and requirements of professional degree postgraduate students' engineering quality training are analyzed. And engineering case-base based on "Internet+" is considered to be suitable to realize the reconstruction of large projects and improve engineering quality of postgraduate students. Besides, the paper also includes methods of case-base construction, which are mainly divided into the following aspects:resource integration, resource informatization, online teaching model and practical teaching evaluation method. With regard to development techniques, WordPress (a web development platform) and multimedia are adopted. Based on the methods and techniques, system framework of case-base can be established. At the end of this paper, the inheritance and sustainable development of case-base platform is analyzed.