The College of Science at the University of Basra organized a seminar entitled ((Nanotechnology and its relationship to secondary metabolism [SMs])) by the graduate student. Zainab Abdel Ameer Najim... The study aims to investigate the relationship between secondary metabolism and the synthesis of nanoparticles. the first axis. Definition of secondary metabolism produced from medicinal plants and the sources of their presence in types of medicinal plants. Methods of diagnosing and analyzing them using modern devices, the causative factors that led to the formation of secondary metabolism, their locations, and their contribution to protecting the plant from biotic and abiotic factors and stresses. As for the second axis. It discussed modern nanotechnology, its definition, and methods for synthesizing nanoparticles using several methods, the most important of which is green synthesis, which is the focus of the study. The relationship between secondary metabolism and nanosynthesis was demonstrated. And the reasons that led to choosing green synthesis in the manufacture of nanoparticles. In addition to methods of diagnosis and use in medical applications.