The purpose of this article is to reveal the peculiarities of the agrarian sector deregulation mechanisms in the conditions of the legal regime of martial law and the reasons for the vulnerability of the food security of the country and the world. The process of the agrarian sector deregulation in the period of the legal regime of martial law is clarified with regard to: (a) land matters; (b) taxation; (c) crediting; (d) material and technical support; (e) social and labor relations; and (f) state order. The elements of scientific novelty consist in the introduction of a systematic approach to the generalization of the extraordinary approaches to the process of agrarian sector deregulation during the legal regime of martial law. It is proposed to review the previously adopted documents of a strategic nature regarding the sustainable development of the agrarian sector of Ukraine and to change the mechanisms of the global food crisis fight radically by specially authorized international organizations. The experience of agrarian sector deregulation in the conditions of the legal regime of martial law can be taken into account by the state institutions when reviewing previously adopted documents and during the development of strategic plans for the restoration of the work of commodity producers, guaranteeing the food security of the population and taking into account the internal threats and the long-term external aggression of Russia against Ukraine.