Due to the steadily increasing complexity of manufacturing and testing methods of medicinal products, the increasing regulatory requirements and the accompanying cost pressure the subcontracting of services to third parties („Outsourcing“) has become common practice. On the basis of national and international regulatory requirements and internal company standards the contract giver is obliged to assess his suppliers in the course of a qualification process. Such a qualification process ensures, that the product quality , even though the process is outsourced to a third party, is guaranteed. As the contract giver hast o bear the final responsibility oft he product. The aim of this thesis was the creation of a concept for a standardised, risk based supplier-assessment-system of a pharmaceutical distribution company. This concept will be used as the basis for a supplier-assessment SOP. Considering the regulatory requirements, the global basic structure and local ressources, a flow-chart was generated. In addition, it was determined, that the supplier-assessment-process should be performed in the course of a change-control-process due to the involvement of a supplier-assessment-team. Furthermore, the critical development phase and the decision-making qualification phase were described more detailed. Additionally, gaps of the process-related documentation were detected and relevant drafts were developed. Furthermore, it was defined, that the implementation of the system should be performed according to the local Documentation- and Trainings-Managementsystem. It was recommended that the supplier-assessment-program should be reviewed, regarding the optimization of the system, in the course of the continuous improvement process.