Based on the new requirements of three-wide education in the new era, it is worth exploring how urban and rural planning specialty construct a new operational education mode according to its own characteristics. Urban and rural planning specialty should not only reflect the general rules of education in colleges and universities, but also carry out targeted mode innovation and education practice based on the characteristics of the major itself. Started from the essence of three-wide education, and combined with the general rules of higher education, this study analyzed and constructed a three-level “Pyramid” system of education in colleges and universities, which includes holistic education, ideological and political education, and scientific research education. Further compared the characteristics and needs of urban and rural planning specialty, a new education mode for urban and rural planning specialty based on the three-level “Pyramid” system was proposed, which includes: “Sanguan Education” (view of world, view of life and values) based on the concept of holistic education, the “Sanqing Education” (global conditions, national conditions, and party conditions) based on ideological and political education, and “Sanzuo Education” (conduct oneself, do things, and academic work) based on scientific research education. Based on the teaching and talent training practice of urban and rural planning specialty of Southeast University, this study has carried out a specific analysis and demonstration on the specific practices of “3-3-3” education mode and the actual effect of talent training.