Italy was one of the countries that was badly impacted by the Covid-19 virus. This did not prevent migrants from moving illegally to Italy and their number has significantly increased during the past two years. However, the Security Decree in 2018 was a way to harden the security measures and it consists in limiting the granting of "humanitarian" protection to migrant population. Consequently, during the Covid crisis, this law did not help undocumented migrants and asylum seekers who were the most in need of support and health proctection. They were mainly put in isolated centers and were the most exposed to a high risk of infection. However, undocumented migrants are those who suffered the most and were deprived from accessing to the Italian healthcare system, especially with the emergence of the Covid-19 virus that increased the feeling of anti-immgrant belief and with the adoption of strict security measures. This article examines the effect of the Security Decree in connection with the Covid-19 on migrants coming to Italy.