The development of the written expression of schoolchildren is one of the main objectives of Primary Education, however, not all teachers have the necessary skills to give it the methodological treatment required by this component of the Spanish Language. In order to contribute to the solution of this problem, we propose the inclusion of a system of methodological actions that will contribute to improve the preparation of fourth grade teachers for the teaching of textual production. It is based on philosophical, psychological, pedagogical and sociological principles and categories. In the development of the research, methods of the theoretical level were used: inductive-deductive, analytical-synthetic, historical-logical, transit from the concrete to the abstract and vice versa, structural systemic and modeling. At the empirical level, methods and techniques such as: pedagogical test, survey, interview, observation guide, document review and pre-experiment design. The realization of the pre-experiment showed that the proposed system of actions is effective for the methodological preparation of teachers.