This study examine the causes of government secondary school teaching staff turn over in the Akaki Kality sub city of Addis Ababa . Concerning specific objective inspire of the fact that teachers turnover is the buzzword through both in Addis and other cities in ethiopia .This study confines itself to the secondary school in the Akaki Kality sub city of Addis Ababa .Since the study was descriptive survey of mixed methods research through used both qualitative and quantitative approach were utilised . Majority questionnaire were distributed to 120 teachers and 10 principals who were selected using simple random sampling from six governments secondary schools via Sampling techniques . In addition to this interviews were conducted with both teachers and principals . while document anlaysis reviewed supportively . After that both questionnaires and document review were analysed and interpreted using frequency ,percantage .Mean value and rank order ,on the other hand the data that were collected using interview and open ended questionnaire were coded transcribed and analysed .The result from the analysed data revaux of the data analysis showed that inadequate salary that teachers monthly earned ,inadequate instruction material, high Work load, poor relation with supervisors .unfair treatment of teachers by principals ,the poor performance by students ,students cheating during Examination , administrative problems, student character and disciplinary problems, low social status accorded to teachers by the society, teachersâ€™ lack of initial preference to teaching profession and lack of opportunity for further education were the major factors that aggravate the turnover of teachers in government Secondary school . Finally improving salary ,other benefits and improve administrative support were some of the possible strategies forwarded In view of this, important recommendations were made to mitigate the problems.