China is in the process of improvement of territorial and spatial planning system. Regulatory detailed planning is a key link in the five-level and three-category system of territorial and spatial planning. The course of regulatory detailed planning is a compulsory course for undergraduates majoring in planning, and it urgently needs reform and innovation in the context of the new territorial and spatial planning. Since 2020, Hebei University of Technology has kept pace with the times and made significant adjustments and optimizations to the regulatory detailed planning course. The previous pure design course has been adjusted to a theoretical course + design teaching. However, there are problems such as insufficient connection between theoretical courses and design teaching, and disconnection between teaching and industry practice. Guided by the relevant norms, standards and guidelines of territorial and spatial planning, it optimizes and updates the teaching content of the theoretical part and adjusts teaching hours, introduces the concept of OBE, and optimizes the teaching process of design courses from the two roles of teachers and students. The specific measures are， the 1+1+1 whole process control and flipped guidance of the teacher team, the 1+1+1 whole design process participation, collaboration and autonomous internalization of the student group, and the autonomous feedback and whole process evaluation mechanism of the student group and teaching team. Emphasizing on continuous improvement is an important connotation of the OBE concept, the reform and optimization of the regulatory detailed planning course will continue to be carried out under new opportunities and challenges, serving the training of urban and rural planning professionals and the construction of high-quality living environment.