1, doctor appointment: select a suitable doctor for consultation and issue a certificate of physiological period. You can choose a gynecologist, a family doctor or a female health expert.

2. Purpose of explanation: Explain to the doctor why it is necessary to issue a certificate of physiological period when making an appointment or seeing a doctor. Make sure the doctor understands your needs and requirements.

3. See a doctor: Go to the medical institution at the appointed time and have face-to-face communication with the doctor. The doctor will make relevant inquiries and inspections to ensure that your needs are reasonable and in line with relevant laws and regulations.