The failed July 15 Coup was the 5th coup in the history of the Republic of Turkey. This failed coup was the reflection of Turkey’s domestic political struggle. Turkish government attributed the coup to Gülen Movement’s subversion and sabotage activities against Turkish government. Turkish government began to fully purge the military，government agencies，and education，media，economy，and diplomacy spheres. After the failed coup，Turkey adjusted its domestic and foreign policies. On the one hand，it enforced emergency measures，strengthened government’s power control，especially comprehensively reshuffled the military. But it did not change the secular character of the regime. On the other hand，there were new changes in Turkish diplomacy. Turkey-US relations and Turkey-EU relations were alienated. Turkey normalized and rapidly warmed up its relations with Russia. Turkey went further on its Looking East strategy. The future of Turkish foreign policy is still uncertain.