This research focuses on the interpretation of the use of metaphor in the Good 4 U song lyrics written by Olivia Rodrigo. Researcher used the conceptual metaphor theory proposed by Semino (2016), and interpreted by using theory from Smith (2021). This research is qualitative research and the results of this research show that there are 6 categories of metaphors that can be captured in the lyrics of Good 4 U song. Out of the 27 data, there are 2 absolute or paralogical metaphors, 1 dead metaphor, 4 extended metaphors, 5 indirect metaphors, 4 contextual metaphors, 10 root metaphors, and 1 metaphor that is not belonging to the metaphor category. The researcher can conclude that the root metaphor is the most common metaphor found in the lyrics of the song Good 4 U. The interpretation of the lyrics of the song deals with (1) The destruction of the relationship, (2) The warmth of a past relationship, and (3) the sadness of the singer this song because she was ignored by her ex boyfriend who achieved extraordinary success. From this research it can be concluded that metaphors greatly affect the meaning of lyrics because they can convey a certain meaning better, which can help the listener understand what the composer is trying to say.