Informed consent is a medical document that doctors communicate with patients before conducting various invasive examinations or treatments. The purpose is to let patients or their families know the general situation of examination or treatment, possible risks, advantages and disadvantages of treatment, etc. If patients understand and agree, they need to sign. However, at this stage, patients have a lot of dissatisfaction with the informed consent form, which feels like signing a "life and death certificate". Informed consent must conform to the principle of "full notice". Use words and languages that the subjects can understand, so that the subjects can "fully understand" and "choose independently". Informed consent is not a "life and death", nor is it the premise and basis for doctors to be exempted. If the doctor is at fault and causes substantial damage to the patient, the patient can also claim compensation.