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This paper presents a review and analysis of the possible use of plasmonic gold nanoparticles (GNPs) for theranosticsand methods for increasing the most important GNP parameters which are Raman scattering for studying Ramanspectroscopy (SERS) and converting light energy into surface heating energy for photothermal therapy (PT). The purposeof this study is to find the condition under which we can obtain the maximum conversion of light energy into heat forPT and at the same time receive a sufficient signal for detecting SERS by examining and analyzing the details of existingworks about modified plasmonic nanoparticles. Also, to evaluate the significance of this study for the application oftheranostics and the improvement of the quality of cancer tumors treatment. Research methods will include the study,analysis, synthesis, comparison of scientific literature on the topic of the article.