Audiences often classify stage sets as realistic or not - realistic based on visual reality. However, "intuitively" distinguishing or identifying the differences between the two seems to have greatly simplified the problem of deciding what constitutes a realistic or non-realistic stage set.

Starting with the evolution of stage scenery from the early 19th century to the early 20th century, this study observed the visual and spatial development of scenery by sorted out and analyzed the influence of artistic trends in theater at that time. Then we begin with the question raised by the art historian E．H．Gombrich in the history of art –Why is it that different ages and different nations have represented the visible world in such different ways, and re-examined many ideas we take for granted.

Back to the designer himself, we discuss how the stage designer, as an artist, takes the script as the base and the stage elements as the means of expression to find a "reality" corresponding to the audience's mind. Taking my graduation production " The Night When We at The Beach " as a discussion and analysis example, we review and examined the designing process.