Practice is one of the basic categories of practical aesthetics .Its development should be a task of top priority.Today the vague definition of practice is a defect of practical aesthetics. Most of challenges to practical aesthetics can attribute to different perceptions of practice. Therefore, it's necessary for practical aesthetics to define practice exactly, including its materiality and spirituality, society and individuality, humanization of nature and naturalization of human being, in order to overcome its defects and show ...