1. Some information related to the project can be changed and some information cannot be changed. The information that can be changed will also depend on the status of the declared project, so as to judge whether to change it at any time or apply for project change according to regulations, and then change it after approval. It is generally acceptable to change people before the topic is finished. Under normal circumstances, the researchers of the project should determine at the project application stage that the project cannot be changed in principle after it is established, but before the project is completed, those who have justified reasons can apply for changes.

2. Change the information before the topic is finished, indicating that the topic has been learned. According to the relevant regulations of the project, the researchers of the project should be determined at the project application stage. If the research project, once the personnel change, it may lead to an increase in the time for the project to complete the research, and even lead to the project not being completed. Therefore, it is impossible to change personnel before the topic is finished.

3. However, for different projects, the temporary management mode of the project is not necessarily the same, and there are different regulations for the personnel who change the project. Not all projects can change people. Although most projects are allowed to change personnel before the project is completed, some projects cannot be changed after the project is established. For the latter, you can't change personnel before the topic is finished, otherwise it will be withdrawn. So we can only say that people can be changed until the general topic is finished.

4. Project research takes time. Although there is no unified project completion time, the project research time itself is relatively long. In a relatively long research cycle, project researchers may be unable to complete research tasks due to unexpected situations. If the personnel are not changed, it will definitely affect the project research process. Therefore, most project organizers stipulate that under the premise of justified reasons, they can apply for changing personnel, and once approved by relevant units, they can successfully change.