The present thesis discusses the needs, procedure and problems found during the development of a Visualization Tool in MatLab and Simulink. Such tool was intended to solve some industrial processes management issues, such as the modelling of the physical structures according to its functional analysis, the definition of complex processes and so forth. The motivation of this work was the lack in the current State of the Art of a tool for the management of complex industrial processes. Such processes often consist in the management of a lot of system variables: value references, control signals... It is then necessary to develop a software tool that eases the work of the engineers and implements the basis of the principles extracted in the previous work of the MeSTA project. The background of the problem has been studied in order to understand the needs of the research and industrial community. Therefore, a first requirements analysis was required to be done. As a starting point, some brainstorming meetings among the research group and industry representatives took place. The work then was divided into two main tasks; First, the development of algorithms for the process control structure calculation, when all the involved transfer functions are given. The outcome of this assignment was a MatLab function library and a brief specification for its use in the graphical interface and connecting it to the application data. Second, the implementation of the user interface using the Simulink objects library, which was later connected to the code before related. The present thesis depicts the results of this last task. As mentioned, the implementation of the tool was made in MatLab and Simulink, combining the already existing Simulink functionalities with the desired data maintenance. A graphical analysis interface, representing model’s structure, was developed. A SSG standard representation of some objects had been as well developed, in order to create a model of a plant. Afterwards, some simple processes were built and successfully tested and analysed. As a result, the graphical interface provided visual information of the transfer functions that were possible as well to be submitted by the user. In addition, another important feature was developed: the structure layers. In order to bring the tool the ability of separating graphical information of the model from the control and signal structure, an utility for the user, hiding and showing the model components, was written. Another interesting feature was the possibility of importing and exporting the models, in order to provide an easy way to share the results among the technical professionals.