In this paper graduation field work of students of one grade majoring in preventive medicine is investigated by means of questionnaire and making a diary for practice.The investigation shows that the major difficulty for the practical units to admit trainees is no housing.In spite of this,most of the units welcome the students and devote much attention to guiding practice.Generally,they can arrange for interns to practice in different departments according to the time and the contents of the practice plan.Different units have different practice situations.Each unit has a good evaluation of our school's students,except for the operation skill.The writers hereby have offered concrete suggestions on how to solve the problems.