1. This agreement must be signed by the doctor and the patient.
2. The contents of the contract should include some information related to the subject that the subject must know. For example, how to do the operation, what materials are used, the characteristics of the materials, what may happen after the operation, the time of taking out stitches, the recovery time, complications and so on.
Legal basis: Article 135 of the Civil Code of People's Republic of China (PRC), civil juristic acts can be in written form, oral form or other forms; Where laws and administrative regulations stipulate or the parties agree to adopt a specific form, it shall adopt a specific form.