Whether the national epidemic prevention system can overcome the test of the new crown pneumonia epidemic in a democratic and legal way is considered to be a part of the competition between democracy and dictatorship systems; the emergency caused by the new crown pneumonia can therefore be regarded as a touchstone for a democracy and a rule of law. However, since the outbreak of the new crown pneumonia epidemic in early 2020, Taiwan's epidemic prevention emergency response system established around the Central Epidemic Command Center has been continuously questioned as unconstitutional and illegal. During the epidemic prevention period, the administrative department has made anti-epidemic measures that are effective for the people of the whole country and have a significant impact on the basic rights of the people. The main normative basis is the general clause of epidemic prevention measures. The general clause of epidemic prevention measures has also been questioned as violating the clarity of the law with the principle of legal reservation. In response to the aforementioned doubts about the legitimacy of my country's epidemic prevention emergency response system, this article will focus on the constitutional constraints of the epidemic exception state, the constitutionality test of the organizational authority of the Central Epidemic Command Center, and the legal issues related to the general provisions of epidemic prevention measures. In addition, this article will refer to the special epidemic prevention model constructed by Germany in response to the new crown pneumonia epidemic, and provide suggestions for the reform of my country's epidemic prevention emergency response system.