This research paper offers a comprehensive comparative analysis of the Gross Domestic Product (GDP) structures of developed and developing countries. The study focuses on five key economies: the United States of America, Germany, Russia, China, and India. It examines the composition of GDP across various sectors, including industry, services, and agriculture, while also exploring the factors influencing these structures, such as technological advancements, government policies, and global economic trends. This work aims to provide insights into the varying development trajectories and economic dynamics among the selected countries.