Within the framework of the participation of the Paris Descartes University in the European space of higher education and research, the deployment of the Erasmus + program at the University takes a major place in the promotion of the students and staffs mobilities and above all teaching staff mobilities. The mobility office of the Paris Descartes European affairs and international relationships department with the departmental international relations offices in its 10 academic components worked at the implementation of the program dedicated to the mobilities. During the academic year, 167 students of the University made a mobility within the framework of the Erasmus + Program : 166 students for a student mobility for studies and 1 student involved in a mobility of traineeship. 26 teachers-researchers made teaching staff mobilities. 191 inter-institutionnal agreeements have been signed within the framework of the Erasmus+ project. Actions of dynamic integration were organized during the academic year for incoming students : - Buddy program for students of Paris Descartes and welcomed students, - Intensive course of language and French civilization proposed at the beginning of each semester, - events and visits, - Official welcoming at the University and in the components at the start of each semester, - Sending of regular e-mails of information as a newsletter. In the same way Paris Descartes University and its components proposed to the students willing to prepare a mobility period : - information day on exchange programs at the University ( Headquarter) and meetings in the components, - Information on the website of the University, via emails on specific subjects. Paris Descartes support for the program expresses itself by the academic recognition of the validated courses. The period of mobility is mentionned in the " Diploma Supplement" of the student. It participates in the official recognition of the program by the establishment and emphasizes Paris Descartes support in the program. The participants feed backs are very positive. 90 % of the incoming students were satisfied with their mobility at Paris Descartes University . 96 % of the outgoing students expressed their satisfaction on their mobility. The incoming and outgoing teachers-researchers stressed a 100% satisfaction rating. The launch of the Erasmus + program generated new proposals of partnership projects within the framework of bilateral agreements or of specific projects (Key action 1 and 2). The University answered positively to the proposal of the University of Salzburg to collaborate in its Sino-European Summer school (amphitheater, opening of the applications to the students of Paris Descartes, participation of teachers requested). The international Center for educational studies (CIEP) proposed to the University (Faculty of human and social sciences) to participate in an European project "Recolatin" / Erasmus + program- key action 2 with Latin American partners. The University of Leuven (KU Leuven) proposed to the University (faculty of medicine) to take part in a project of the key action 2. These are examples of impacts and new cooperations within the framework of the Erasmus+ program