Aesthetic subject refers to the elements of aesthetic relationship. As opposed to "aesthetic object". A person who knows, appreciates and judges aesthetic objects and creates a better society. It is generally believed that there are mainly four kinds of people, namely creators, appreciators, performers and critics. Due to the differences in age, psychology, culture, literacy and aesthetic ability, different aesthetic subjects have different aesthetic needs and will make different aesthetic judgments when facing the same aesthetic object. The artistic works created by artists should be suitable for the levels and aesthetic needs of aesthetic subjects with different ages and psychological characteristics. As an aesthetic subject, the artist's aesthetic ability also restricts and affects the development trend of his creation and the value of his works of art to a certain extent.