The debate on the subject of Bai ju-yi s ‘PATHETIC SONG’ is an area of research that has been handed down for 80 years in Chinese academic circles. This paper focuses on the content of the second debate on the topic of ‘PATHETIC SONG’ in the 80s and 90s, and focuses on the theories of affection and allegory that form the two walls of the debate on the subject of Bai ju-yi’s ‘PATHETIC SONG’ There are several other thematic theories, such as the double-minded theory, the pathetic theory, the regrets, and the sympathy theory, but they have not been described in detail. It is argued that the theme of affection in ‘PATHETIC SONG’ is based on the pure love of Hyeonjong Dang and Yang kuei-fei, and the theory of allegory in ‘PATHETIC SONG’ is the view of seeing poppy as the color of the country that ruined the country. This argument is based on the allegory that criticized Dang Hyeon-jong and Yang kuei-fei. The grounds for these two thematic theories are the interpretation of the main contents of Bai juyi s ‘PATHETIC SONG’and the interpretation of the creation motives of Bai ju-yi s ‘PATHETIC SONG’, the interpretation of ‘PATHETIC SONG’ and his experience of love with Bai ju-yi s first love Sangryeong, and the social psychological aspects of the citizens of ‘PATHETIC SONG’. It presents mixed interpretations according to the interpretation of human characteristics and the demands of the times. From the perspective of scholars who study ‘PATHETIC SONG’ and readers who watch ‘PATHETIC SONG’, how to view the theme of ‘PATHETIC SONGN’ in terms of acceptance aesthetics is inevitable to express various opinions and arguments. Realism or positivism literary thought methodology Those who studied the topic of ‘PATHETIC SONGN’ insisted on the theory of allegorical themes, and those who studied the theme of ‘PATHETIC SONG’ with an artistic and aesthetic literary thought methodology indicated that Hyeonjong Dang and Yang kuei-fei were recreated in artistic form rather than historical figures. It portrayed the two people s pure love and argued for a love theme.