The research aims to identify the impact of electronic Promotion in improving the efficiency of the Syrian Investment Agency in attracting foreign direct investment, through studying the relationship between the degree of using of electronic promotion in the Syrian Investment Agency and increasing its market share, and to identify the most important factors that influence on its effectiveness. To achieve that, the research adopted the descriptive analytical method, and apply a questionnaire to a sample of employees in the agency amounted / 38 / employees. The research found a strong correlation between the using of electronic promotion in the agency and increasing its market share, also a strong correlation between the availability of personnel and technical expertise and the degree of using information and communication technology and increasing its market share, a medium correlation between the quality of the website and increasing the market share, and a weak correlation between the level of diversity of the electronic promotion tools and increasing the market share. The most important factors limiting the effectiveness of the electronic promotion in the agency were the lack of a clear strategy for electronic promotion, and the lack of clarity of the electronic promotion mix components.