The purpose of this study was to construct the badminton recreational behavior model by qualitative method. The subjects were the badminton participants living in Taichung City (include 27). The research instrument was semi-structure questionnaire. The data was analyzed by grounded theory. The results were as follows: the behavior of badminton participants could be explained by three stages (the initial process, the continued process, and the keep process). There were three factors in the initial process which were physical factor, psychical factor, and social factor. There were three factors in the continued process which were perceived benefits, perceived appropriateness, and developed the interest of badminton. There were three factors in the keep process which were perceived importance, the habit of badminton, and the time management.