National Natural Science Foundation of China 202 1 One of the important changes: fully implementing the new application code. Specifically, the three-level application code is completely abolished, and the codes of all disciplines are unified into two levels. The primary code 126, the secondary code 1263, *** 1389. Taking the Medical Department as an example, * * * has 35 first-class application codes, which are mainly organ systems and integrate basic medicine with clinical medicine. The applicant selects the corresponding first-level application code and lower-level second-level application code according to the research field.

The applicant shall accurately select the application code according to the applied research direction or field and the "National Natural Science Foundation Application Code" in this guide, paying special attention to:

(1) When selecting the application code, try to choose the secondary application code (4 digits).

(2) Key projects, major research projects and joint fund projects. There may be special requirements for filling in the application code. For more information, please refer to the relevant project types in the body of this guide.

(3) When filling in the application form, the applicant should accurately select "application code 1" and its corresponding "research direction" and "keywords".

(4) If the applicant has any questions about the application code, please consult the relevant scientific departments.