First, contact the school doctor or health center and ask them about the specific requirements and process of fever rehabilitation certificate. According to the instructions of the school doctor or health center, you may need to provide some relevant information, such as students' personal information, the starting and ending dates of fever, the treatment process and so on. According to the requirements of the school, you can make an appointment with the school doctor or other hospital doctors for physical examination or review. The doctor will evaluate the student's condition and issue a fever rehabilitation certificate after confirming the student's recovery. Make sure that the certificate contains the necessary information such as the student's name, the purpose of the certificate (fever proof), the doctor's signature and the doctor's contact information.