The proof usually contains the following elements.

1. Header and title: Mark "Medical Diagnosis Certificate" or "Disease Diagnosis Certificate".

2. Basic information: patient’s name, gender, age, ID number or social security number, contact information and address.

3. Medical institution information: name, address, contact number, medical institution seal, etc.

4. Medical treatment information: admission/visit date, outpatient/inpatient number.

5. Condition summary: Briefly describe the patient's main complaint, current history, past history, family history, and physical examination and auxiliary examination results.

6. Diagnostic opinion: clearly list the name, classification, stage, complications and other diagnostic results of the disease.

7. Treatment process and treatment opinions: record the main treatment measures received by the patient, medication status, surgical records (if any), rehabilitation guidance and doctor's orders.

8. Leave suggestions (if applicable): Reasonable sick leave suggestions are given based on the condition, including the rest period.

9. Physician’s signature: The physician who issues the certificate should be an attending physician or above and a practicing physician registered in this medical institution. His signature represents responsibility for the authenticity of the content of the certificate.

10. Date and seal: The date of issue of the certificate and the official seal or special diagnosis certificate seal of the medical institution.