The right to information is one of the basic and important human rights, as it contributes to strengthening democracy, exercising oversight, achieving transparency and participating in decision-making. The principle of free access and reuse of information came in implementation of the right to obtain information, and this reinforced the great desire of researchers and specialists to publish research and scientific articles, and make them available to those who wish to obtain them easily and without any restrictions, and benefit from them in supporting and revitalizing scientific research, and spreading science and culture This research seeks, by looking at a group of research and articles published on the Internet, and their extrapolation, study and analysis, to reveal the system and method of free access to information, the method of reusing it, knowledge of its aspects and mechanisms, the importance that the international community attaches to its guarantee and protection, and the enrichment of the Arab Library with research and articles. Scientific reveals the system of free access to information, and the method of re-use. Where the research aims to know the principle of free access and reuse of information and its importance, and its methods represented in the golden and green ways, and its mechanisms, and to know the positive aspects in it and the obstacles that restrict it, and the legal guarantees that regulate and guarantee it, and to know the extent to which some countries apply this principle. The research concluded that the principle of free access is a fundamental pillar in the development of scientific activity in all areas of life. And that the application of the principle of reusing information further strengthened democracy, transparency and accountability, combating corruption, spreading awareness and knowledge, and actively participating in oversight and decision-making. The Internet has facilitated the application of the principle of free access to information and its reuse, as it has provided scientific institutions, researchers, students and readers with permanent and continuous communication through scientific electronic platforms and social networking sites. The initiatives, guarantees and laws issued by the international community had a significant impact on the development of the free access system and keeping pace with modern technical developments. The research calls on international organizations and government agencies to support development programs and reduce the digital divide between developing and developed countries, and assist them in developing their infrastructure, as well as inviting civil society institutions and government agencies to conduct training programs aimed at raising awareness and spreading a culture of human rights, and introducing ways and mechanisms of free access to re- Use of information.