This work analyzes the importance of logical matrix in projects. To work out the logical matrix it is important to know the basics of management, especially the management in projects. Management includes five classic elements which have to be respected to manage with quality and success. Concerning the author Milan Grković there is the sixth important element called development which means the development of processes, conditions and management itself. Projects are managed by using the same elements. Starting with planning, organizing and leading to management of human resources and controlling. By working out the logical matrix it is possible to react in time on changings, probably risks and to access to the project in a logical way. With defined guidelines in advance the logical matrix is filled in systematically and all activities are specified which is important for the success of the project idea.