Graduation practice sessions as a practical teaching institutions in the higher school education system is an important way to improve the quality of undergraduate education and teaching. Currently ,there is a lack of practice bases, not perfect in training system , fuzzy in Practice positioning and so on in graduation practice mode of public affairs administration in agriculture and forestry graduate. In this purpose, to explore effective model , achieve the standardization and institutionalized in teaching graduate internships , and achieve "Trinity" practice mode among students, universities and training unit is the possible ways.