The seismic experiment of the InSight mission (Interior Exploration using Seismic Investigations Geodesy and Heat Transport) is going on Mars. As only one seismometer is operating on Mars, the information on stress state of the interiors could give an additional information on the source loca- tion. Joint analysis of gravity and topography data in a frame of the static method let us some know ledge on stress field in the crust and in the litho- sphere of Mars. At present detailed data on topography and gravity field are available.