Knowledge map was used to analyze the literature distribution, development status, research distribution and research hotspots of maize diseases and insect pests in the agricultural field, so as to facilitate a clear understanding of the development hotspots and frontier evolution trend of maize diseases and insect pest research in China. Based on CNKI database, this paper collected relevant literature data in this field from 2000 to 2019. By using the quantitative analysis function of visualization software CiteSpace 5.5, it drew a knowledge map from the aspects of authors, institutions, keywords and cooperative relations, and analyzed literature data related to maize diseases and insect pests. More intuitively, it reveals the current development status, frontier and hot spots of maize diseases and insect pests in China, improves the efficiency of tracking the frontier of scientific research, and obtains relevant information more effectively, so as to provide beneficial reference for the development of corresponding work in the future.