The purposes of this article were: 1) to study the current condition, the need for developing a growth mindset to strengthen the learning management of primary school teachers, and 2) to study guidelines for developing a growth mindset to strengthen learning management among primary school teachers under the Office of the Basic Education Commission. There were 2 stages of research: Step 1: Study the current conditions. It is necessary to develop a growth mindset to strengthen the learning management of primary school teachers. The sample consisted of 427 primary school teachers in the academic year 2022 derived by multi-stage sampling. Step 2: Study ways to develop a growth mindset to strengthen learning management among primary school teachers under the Office of the Basic Education Commission. The group of informants is qualified by studying the best practices of 5 persons by specific sampling. The research instruments were: 1) a 5-level estimation scale questionnaire, 2) a semi-structured interview form, and 3) a 5-level estimation scale development guidelines assessment form. Statistics used to analyze data include means, standard deviations, priority sorting of PNI[subscript modified] data, and content analysis. The results of the research showed that: 1) the overall current condition and the overall aspect are moderate, and the overall desirable conditions are substantial. It was found that the growth mindset strengthens teachers' learning management. There is a need for development in all 6 areas. In order: Learning efforts, Acceptance of failures, Acceptance of criticism, Learning challenges, Development paradigms, and Motivation for success; 2) Approaches to developing a growth mindset to strengthen the learning management of primary school teachers under the Office of the Basic Education Commission. This can be done by developing all 6 items and 20 approaches. There are development methods that consist of workshops, and learning from other people. Integration in operations, Self-study, Building a professional learning community, Counselor, and Mentoring.