Since the quality of teaching and learning has now been recognized as one of the most important factors in student learning, attention to teacher training has been at the head of the reformist programs of most countries in the world. They seek to answer the question, "What is the best way to effectively prepare teachers? " This has led to extensive studies, and in many of them, the importance of the use of clinical training in the preparation Teachers' education is emphasized by the modeling of medical faculties and hospitals affiliated with them. Therefore, the purpose of this study is to identify the factors influencing the implementation of this type of training in the preparation of student teachers in Iran. This study is a qualitative research based on the "Foundation Data" approach. In this section, using a snowball method, 60 experts, teachers, teachers and students were identified and interviewed. The information obtained from these interviews was written and analyzed using Strauss & Corbin's continuous comparison method. Eleven main themes emerged from findings that could affect the effective implementation of clinical education. These themes include: coordination and coherence of university and school, structuring for action, forming an interactive educational environment, collaborative operational planning, personnel professional development, student clinical experiences development, professional dialogue Performance-based assessment, feedback, improvement of learning chains and financial support. After extracting major categories and determining the core category in the selective coding stage, using the tracing of the main line of the story in the framework of a paradigm model, which includes the conditions, processes / interactions and consequences, than to provide a theory Grounds for action.