The most important principle to conduct the research is to protect the rights and welfare of human research participants. Ultimately, the research related law can contribute to the protection of the research participants because the legal regulation, the administrative regulation by the authority and self-regulation by the institution and the researchers are based on the standards of the law. Recently, 「Bioethics and Safety Act」 that has maintained the status as the framework act to regulate the research legally has whollyamended at 2012 and has been in effect from 2013. According to the whole amendment, the provision about the basic principles for the activities under this act has been includedin this act. In other words, the basic principles for the research involving human research participants as well as human materials and identifiable information have been created to protect the human research participants. And the scope of the research that this act applies to has been extended to the human research and human material research, so the researcher has taken on the legal obligation not only to submit the research protocol or plan to the Institutional Review Board for the review and approval before the conduct of the research but also to provide information about the research sufficiently to the human research participants or the human material donors and to obtain the written consent from them. Also, under this act, besides the review of the research, the Institutional Review Board has taken charge of the oversight of the research, the education for the researchers, the formulation of measures for the protection of the vulnerable persons and groups, the establishment of ethical guidelines for the researchers. Moreover, the provisions about the evaluation and accreditation to the Institutional Review Board, the designation of the public Institutional Review Board, the establishment and operation of the human material bank have been includedin this act. It is very meaningful that this act has been changed to build up the infrastructure for the protection of the human research participants. But, despite these significant changes, this act has still some limitations to protect the human research participants. Because this act has not included some important definitions such as the research, minimal risk as well as not presented enough detailed standards and procedures that are needed to make a determination and to take an action. Therefore, now it is time to find and analyze these limitations, to come up with a solution and to prepare the amendment of this act. Because, for many years to come, this act,as the framework act for the research, should be the foundation for the protection of the human research participant and be enable to present the right standards and practical ways for the institution, the Institutional Review Board and the researcherto protect the rights and welfare of human research participants.