Some researchers, when designing informed consent forms for minors, write in the informed notification section such as paying attention to contraception when participating in the study, which seems inappropriate. According to the current domestic environment and custom, this practice may cause harm to minors, and guardians may also resent it. In clinical research with minors as research objects, the responsible subject is the guardian. The guardian is fully informed and has the right to choose and make decisions, which meets the ethical principle of respecting the subject. Investigators and ethics committees are cautious in dealing with such issues, with respect for the subject on the one hand and protection of the subject on the other. It is suggested that when carrying out clinical research on minors, the informed notification to guardians should specify in detail that minors participating in the study should pay attention to contraception and other issues, but the informed consent form for minors should not write this part. Of course, this recommendation does not necessarily meet the ethical management requirements of all studies, and the final treatment should be decided by the ethics committee collectively.