One of the most important skills for students to use, starting from the preschool period and throughout their lives, is art education. The quality of visual arts teachers, who aim to develop students' knowledge and skills in terms of art, is highly important in this process. It is believed that the knowledge and experience that prospective visual arts teachers before service will enable them to be more effective and successful teachers while serving. In this study, it was aimed to evaluate the professional development of prospective visual arts teachers within the framework of a lesson study. In this study, which was conducted as a case study with a qualitative research model, the participants consisted of 6 prospective visual arts teachers, which included 4 males and 2 females. Within the scope of the study, the data were obtained by using interview forms. Out of these data, codes and themes were obtained by using the content analysis method. As a result of this study, which covered a total period of 8 weeks, it was concluded that the professional development of prospective visual arts teachers was positively developed. It was observed that the lesson study model contributed to the knowledge and skills of prospective visual arts teachers in terms of lesson planning, method-technique, assessment-evaluation and cooperation. According to these results, suggestions, such as professional knowledge lessons that are practical, can be conducted within the framework of a lesson study, were presented.