In order to create a basis for the process innovation procedural model and to use existing ideas, this chapter describes existing procedural model for process management in a uniform manner. The emphasis is on explaining the respective phases and their contents. procedural model in the context of process management thus describe which steps are necessary to ensure the successful development of processes. In addition, existing reference process models are presented. These reference process models contain proposals for processes and their characteristics. These reference process models serve as a source of ideas for the development of your own process map and for the development of individual processes.