Nuclear testing is not only a threat to peace and security of the world, but it could cause different levels of environmental pollution in accordance with the forms of its occurrence. The activists of international law regime have created the Antarctic Treaty, the Partial Nuclear Test Ban Treaty (PTBT), the Comprehensive Nuclear Test Ban Treaty (CTBT), and The Prohibition of Nuclear Weapons (TPNW) in 1959, 1963, 1996, and 2017, respectively. These documents although valuable, have inadequacies and ambiguities that impede them from creating a suitable legal strategy to confront nuclear testing. Accordingly, the most important flaws of the aforementioned treaties are a lack of transparent definition of nuclear tests and explosions and their scope, the neglect of civil responsibility and the drawing up of the mechanism for compensating for nuclear tests, the creation of difficult conditions for their entry into force and, the possibility of a withdrawal clause. In addition to the contractual defects of international law, there is no explicit mandate to ban nuclear testing among other sources of international law. Therefore, in this essay, the aim of the authors is to recognize and remove the flaws in the field of nuclear testing by explaining the legal system governing the prohibition of this type of testing in international law.