According to the government's promotion of the Covid-19 vaccination policy, it may have relevance to the public's perception of the reliability and fairness of the government's epidemic prevention policy. This study analyzed how the public trust in the government's policies and the fairness of the government's quarantine policy decisions change depending on the public satisfaction with the government's Covid-19 quarantine policy. The purpose of this study is to show whether the government's promotion of its quarantine policy affects the reliability of its policies and public perceptions of the fairness of its policy decisions. This study used the ‘Survey on public perceptions using the scientific culture and media of the Fourth Industrial Revolution' as the main analysis data. The survey targeted 1,000 panels nationwide who agreed in advance out of 1.3 million panels secured by Embrain. An Internet survey with 1,000 samples was conducted. As a result of performing multinomial logistic regression analysis with policy reliability and fairness as the dependent variables, it was found that the higher the public's satisfaction with the government's promotion of its Covid-19 vaccination policy, the higher the government's trust in the quarantine measures. Regardless of the demographic characteristics, it was confirmed that when public satisfaction with the government's vaccination policy was high, the reliability of the government's measures also turned out to be high. Second, it was found that the higher the level of public satisfaction with the media's publicizing of the Covid-19 vaccination policy carried out by the government, the fairer the government's epidemic prevention policy decisions. However, although the level of public satisfaction with policy promotion was high, many respondents held the opinion that the government's early message about easing quarantine caused the fourth wave of the pandemic. The results of this study imply that the government's promotion of Covid-19 quarantine policies should be more transparent in order to improve the credibility and fairness of its public policies, and that quarantine policy messages should be carefully announced.