This paper deals with the analysis of the political, economic, security and social consequences of Angela Merkel's political move entitled "Open Door Policy". The purpose of this paper is to investigate the correlation of demographic data of the recorded migrant population in the period 2015 to 2019 in the Federal Republic of Germany (here in after: Germany) with political, social, economic and security indices to more clearly establish the presence of Angela Merkel's political move, allowing migrants to enter German territory. Based on the data found, the political, economic, social and security consequences will be investigated and segmented in such a way that each segment will be investigated separately. The research unit is the Federal Republic of Germany in the period from 2015 to 2019. For the security implications segment, human security indicators will be used to show the state of crime and the perception of security through opinion polls. Changes in population structure and social integration processes of migrants will also be explored in order to establish social consequences, while economic consequences will be explored through the employment rate and the level of average earnings of refugees and migrants in Germany. Likewise, critical internal political events that occurred during the period under study will be cited to explain the political implications. The main hypothesis is that the consequences of "Open Door Policy" are generally positive for German society. It had a negative effect on the decline in the support of the then ruling coalition CSU / CDU, which is why the right-wing populists AfD prospered. The economic consequences of the integration of migrants are generally positive, but it is necessary to work on a more extensive and faster integration of migrants and refugees into the economic system and the labor market. The social consequences are largely positive through the development of further multiculturalism, and the political and social inclusion of migrants and refugees in Germany is guaranteed and present. The security consequences were visible and present in the increase in the homicide rate for 2016 and in the increase in the number of detainees. This coincides with the decline in citizens' perceptions of trust in national institutions and the EU. By analyzing the found relevant data and sources, we successfully answered the above research questions and thus tested the above hypothesis.