資訊傳播與取得產生突破性的進展,網路普及使國人得以透過更便捷的管道發聲,網路成為另一重要發表個人言論的空間,也擴大了現代人的人際關係與生活知識,但也帶來了一些負面的影響,包括網路使用者於網路上發表不當言論以及無自覺的對他人做出傷害性的玩笑舉動,而衍生眾多法律及倫理有關的問題。網路言論因使用者常使用暱稱方式進行發表言論,易使人忽略了網路其實是一個開放且傳播性相當強的媒介,進而輕忽使用者應就自身言論及行為負責。本研究之目的在探討「名譽權保護」與「言論自由」間的權衡問題。使用者於網路上傳述減損他人名譽之事或言論,乃構成刑法妨害名譽罪,其被害人亦可依民法提起民事訴訟請求回復名譽及非財產上之損害賠償。在虛擬生活漸漸成為現實生活一部份的同時,網路使用者若未就網路言論謹慎發表,勢必將就該不當之言論負刑事及民事上之責,應多加謹慎。本研究選取網路言論涉及誹謗及網路霸凌之判決案例為研究對象,並參考我國憲法與刑法相關法學理論,針對網路之脫序行為與不當言論而可能觸犯我國法規相關刑責,做一個深入討論。Dissemination of information and made the breakthrough, and Internet penetration to enable people to voice through more convenient channels, the Internet becomes another important space to express their personal views, but also to expand the modern interpersonal relationships and life knowledge, but alsobrought some negative effects, including the improper remarks of Internet users on the network and non-conscious harmful to others to make a joke move, derived from a number of legal and ethical issues related to Users often use the nickname they hear of speech to make people ignore the medium of the Internet is in fact an open and spread a very strong, and thus overlook the user should be responsible on their own statements and actions.The purpose of this study was to explore the trade-offs between the right of reputation protection "and" freedom of speech ". Users to upload above detract from the fame thing of others or statements on the web, which form the criminal obstruction of defamation victims filed civil proceedings request reply honorary and non-property damages or the Civil Code. Virtual life has gradually become a part of real life at the same time, Internet users If you do not they hear cautious published, there will be in respect of the inappropriate remarks charges of criminal and civil responsibility, should be more cautious. Selected network of speech involved in the case of defamation and cyberbullying judgments of the study, and refer to China's Constitution and criminal law relevant Law theory, behavior and inappropriate remarks may violate China's laws and regulations related to criminal liability for the disorder of the network, make a in-depth discussions.