The article is devoted to the problems of ensuring effective legal regulation based on the optimization of the Verkhovna Rada of Ukraine's performance of two interrelated functions – the adoption of laws and the implementation of parliamentary control. The laws of any country, first of all, establish the legal regulation of the activities of state authorities at all levels in a harmonious combination with the legal regulation of modern social relations. The provisions of the legislative act are mandatory not only for their implementation, but also require monitoring of their implementation. The question of who should monitor the compliance of this or that Law of Ukraine with the concept of “law” and “rule of law” remains open, and not only at the legislative level. The answer is simple – “parliament” (although its feature is the presence of chamber systems) entities of management, to evaluate the discipline of the implementation of legislative acts, but also to make a decision about how effective the legal regulation itself is in this or that sphere of management, what changes should be made to the regulatory and legal acts to improve the state of their implementation, as well as to what extent regulatory acts correspond to the essence and regularities of social relations. The analysis of statistical data on the number of registered draft lawsand adopted laws of Ukraine, the hearings held by the Verkhovna Rada of Ukraine of the VIII and IX convocations showed that, recently, the function of adopting laws dominates in comparison with the exercise of control over their proper implementation.