Interplanetary geodesic study of the MMX project. This is the title of the internship project, upon which this report is written. It encloses in itself the main global topic of the entire project: the analysis of geodesic parameters within the context of the MMX mission. This mission organisation is led by the Japanese space JAXA, but the collaboration with the French government space agency CNES has been demanded for specific operational sectors. The internship was completely realised inside the CNES, and more precisely in the Geodesic Study DSO/DV/GS department, which takes part in the Groupe de Recherche de Géodésie Spatiale (GRGS, Space Geodesic Resarch Group).