It is difficult to apply for a postdoctoral mobile station, because the postdoctoral mobile station must have objective conditions, that is, certain scientific research and experimental equipment, sufficient scientific and technological strength, be able to apply for scientific and technological innovation projects, get financial support from the state, attract graduate doctors to cooperate in scientific research, and truly play the role of a postdoctoral mobile station. (Post-doctoral) refers to those who have obtained a doctoral degree and engaged in related research or limited time for further study in universities or scientific research institutions. Postdoctoral institutions are called "postdoctoral research mobile stations" or "postdoctoral research centers". Its post is not a degree, but a job, usually ranging from 6 months to 5 years. It is considered as a transitional arrangement to engage in scientific research, and it is necessary to quit the postdoctoral site after the expiration of the work. The national postdoctoral fund supports postdoctoral students for two years.