The insurance industry is one of the most important service industries in the national economy, and there is usually a widespread investment in it. The World Trade Organization and its predecessor have been created to liberalize trade in goods and services. The General Agreement on Trade in Services is specifically devoted to the business of services, one of the financial services referred to in this agreement, the insurance industry. The present research is based on the impact of Iran's accession to the World Trade Organization on social security. In Iran, joining the World Trade Organization faces a number of legal obstacles that make this difficult. Considering this importance, in this research, attempts have been made to examine the dimensions of the impact of Iran's accession to the World Trade Organization on the insurance industry of the country. Hence, the research findings show that Iran's accession to the World Trade Organization has had a positive impact on the country's insurance industry, and in spite of the short-term detrimental effects of this accession, it will lead to the promotion of the Iranian insurance industry in the long run and the dynamics of the insurance system In Iran.