Information and communications technologies that link to the Internet and other information networks have made it possible to collect, store and access information from anywhere in the world. These technologies offer great potential for social and economic benefits for business, individuals and governments. However, while these technologies make it easier and cheaper to collect, link and use large quantities of information, they also often make these activities undetectable to individuals. Consequently, it can be more difficult for individuals to retain a measure of control over their personal information. Personal information should be accurate, complete and kept up-to-date to the extent necessary for the purposes of use. Thus, Personal data protection laws should be aimed at personal information self-determination rights of protection. The legal system should provide legal mechanism in personal information privacy protection. Public administrative agency in Taiwan will face more significant challenges of personal data protection impact and influence, especially for management and supervision of Sensitive personal data. This article will discuss the key concepts of personal data protection legislation issues, that is, personal information privacy and Information self-determination. Second, this article will attempt to give a brief description of new version Personal Data Protection Act in Taiwan. This new version of Act will cause the impact of public administrative agency, so they should prepare early response and specific measures to achieve the legislative purposes, that is protecting people's information privacy and facilitate the rational use of personal information.