The construction of first-class courses is the central work of quality engineering construction in universities,an important measure to guarantee the realization of the goal of talent cultivation in universities,and the key to promoting the teaching reform and improving the quality of talent cultivation in universities,and it is the core content of"double first-class"construction in universities.Based on the author's experience in leading the first-class course of Spectrum Analysis,this paper probes into the construction of the first-class course of Spectrum Analysis and the ways of putting the high-quality resources into the classroom from the aspects of the course construction,the first-class teaching materials,the first-class teachers,the first-class teaching methods and the first-class teaching management,etc.,with a view to peer first-class curriculum construction and quality resources into the classroom teaching reform and sharing.