本文以違反新冠肺炎防疫法令行政罰案例為研究對象，採取文獻分析法及法學方法，先以法律保留原則、法律明確性原則、授權明確性原則及比例原則，檢視我國新冠肺炎期間防疫法制之合憲性與適法性；其次，針對禁止入境、居家隔離、禁止室內聚會、限制營業自由及外出全程配戴口罩等防疫措施，分別整理其法令依據、管制目的與主要爭點；最後，透過因違反防疫法規遭主管機關裁罰，並經法院判決確定之行政訴訟案件分析，觀察司法實務對防疫裁罰案件之審查標準與法律適用態度。 本文認為即使在公共衛生緊急狀態，面對疫情發展的不確定性，仍須落實憲法原則最大可能的實踐和諧。傳染病防治法的修訂應汲取過去防疫經驗，對於人權重大限制由法律自為規定，如法律授權制定法規命令，其目的、內容與範圍應盡可能明確，以完善防疫措施之法律依據、裁罰基準及救濟機制，以兼顧防疫效率與法治國原則。;This thesis focuses on administrative penalty cases involving violations of COVID-19 prevention regulations. By adopting literature analysis and legal methodology， this thesis first examines the constitutionality and legality of Taiwan’s COVID-19 prevention legal framework through the principles of legal reservation， legal certainty， clarity of authorization， and proportionality. It then analyzes the legal bases， regulatory purposes， and major issues concerning various preventive measures， including entry bans， home isolation， prohibitions on indoor gatherings， restrictions on business operations， and the requirement to wear masks at all times when going out. Finally， by examining administrative litigation cases in which individuals were penalized by competent authorities for violating COVID-19 prevention regulations and the judgments became final， this thesis observes the standards of judicial review and the application of law adopted by courts in such cases. This thesis argues that even in a public health emergency， and despite the uncertainty surrounding the development of an epidemic， constitutional principles must still be realized to the greatest extent possible in a harmonious manner. Future amendments to the Communicable Disease Control Act should draw on past epidemic prevention experiences. Measures that impose significant restrictions on human rights should be expressly prescribed by law. Where the law authorizes the creation of administrative regulations， the purpose， content， and scope of such authorization must be defined as clearly as possible. In this way， the legal bases， penalty standards， and relief mechanisms for epidemic prevention measures can be further improved， thereby striking a balance between the efficiency of disease prevention and the principle of the rule of law.
