Motivation: Epidemiology is a study population distribution of disease and health status and influencing factors, to explore how disease prevention and control, the promotion of public health science, which is an important branch of preventive medicine. With the medical model and the changes in disease spectrum, people's concepts of health have also changed, epidemiology and clinical medicine has become a discipline closely linked with each other has been more and more widely appreciated. I very much hope to conduct epidemiological studies. First, it's a broad field of study, not only involved in the study of infectious diseases such as influenza A H1N1 influenza, SARS, tuberculosis and some chronic diseases such as heart disease, diabetes and even smoking, obesity can become its study. In addition, epidemiological studies for the public health importance to the health, is one able to directly provide services to the public subject. Through the epidemiological study and research, I can understand the disease in time and space, as well as the distribution of population (through statistical data to support) and thus the health status of population control, disease control provide clues for the study, provide a reference for the formulation of health policy. Experience: I passed five years of study and practice of the medical profession a solid grasp of the medical knowledge of the basic theory. In particular, preventive medicine, infectious diseases, statistical mathematics and other related disciplines, I have achieved good results. This brings me to disease prevention, diagnosis, treatment, and imaging findings of an initial and a clear understanding. I have several panel discussions on topics of participating schools, involving topics such as "Northeast iodine intake and thyroid disease, epidemiological studies of the relationship," "college students psychological pressure and chronic fatigue syndrome, relationship." Through research and consulting, and case-control research and analysis, I understand that the above-mentioned diseases, the relationship between factors and their access to the research of practical experience, such as the use of computers for data analysis. The most important is to develop its own pre-release medicine (epidemiology) interest. In addition, I have since September 2009 Heilongjiang University of Chinese Medicine in the clinical internship, during which accumulated a wealth of clinical experience, the consolidation of the medical theory of knowledge, has been commended by the instructor. These are areas in the epidemiological studies done a solid groundwork. Interests: Study the disease and its influence factors of relevance, such as diabetes and the link between eating habits. In addition, the scope and speed of the spread of disease prediction and control, such as how to effectively immunize against the crowd in order to avoid the spread of certain diseases. Work: Because my parents were in hospital and health departments, I was influenced by them, want to engage in medical and health work. Therefore, I intend to return to their studies in the hospital or a disease prevention and control centers. In addition, the executive branch in case of statistical or epidemiological aspects of disease prevention and control work is also my ideal career direction