Based on our phytochemical analysis in the present study, the ethanol extract of A. princeps was confirmed to contain organic acids, glycosides, and phenolics. In particular, organic acids and glycosides showed an intense reaction and are thought to be the active components in the MRSA inhibition mechanisms. Therefore, further studies to examine the specific effects of the components present in A. princeps are necessary. Furthermore, additional studies should be conducted to identify antibacterial substances against MRSA.