1. Fill in the application form: You need to fill out an application form, which should include your fund account information, personal information and reasons for cancellation.
2. Provide identification: In the application form, you need to provide your identification, such as ID card, passport, etc.
3. Provide bank information: If your fund account number is associated with a bank account number, you need to provide bank account information, such as bank, account name and account number.
4. Submission of application materials: Submit the completed application form and identity certificate to the National Natural Science Foundation of China or relevant administrative departments, generally by mail or directly.
5. Waiting for approval: The National Natural Science Foundation of China or relevant administrative departments will approve your application. If your application is approved, the fund account will be cancelled, otherwise, you need to reapply or contact relevant departments to solve the problem.