The present proposal for intervention examines the issue of strategic planning focusing on an institution of the Legislative Branch within on a State Public Administration. The main objective of this paper is to propose a model of strategic orientation capable of involving the improvement of the legislative procedures, meeting the society's longings with guarantees of continuity in the administrative actions of the Legislative Assembly of Rio Grande do Norte. Therefore, structured questionnaires were used in order to make an internal and external diagnosis of the current situation and future perspectives of the Rio Grande do Norte Parliament, using for such requirements such as image, performance, current situation of its strategic planning and vision of future. These questionnaires were used for three categories: public server, parliamentarians and society. The technique used to analysis the questionnaires was the content analysis whose results, compared to each other and to the analysis of the 2017- 2018 strategic planning, contributed to the development of a trend mapping, which was analyzed with a focus on the elaboration of the proposal which was submitted to validation through a Focal Group that executes the strategic planning in force in the ALRN. From the analysis of the quiz, it was concluded that management by guidelines is necessary so that the strategic culture can be perpetuated in the Rio Grande do Norte Legislative Assembly, which today has low interaction with society, presenting low efficiency, effectiveness and effectiveness in the performance of the finalistic activities, which are legislative processes. In this way, there was a concern focused on increasing credibility, with greater popular participation, bringing elements of ethics, transparency and communication that should be aligned with an appropriate strategic direction. The aim of this proposal is to contribute to the improvement of legislative management focused on the concepts of New Public Management and the insertion of elements of accountability, aiming at raising the image of the Legislative Branch in the State of Rio Grande do Norte and ensuring improvement quality of public policies and the quality of the Law. Whereas for the case the measurement of the results can only be performed in case of effective implementation by the Board of Directors of the ALRN, the present research constitutes a proposal of intervention.