The purpose of this study was to explore the problems that teachers face in the curriculum implementation in Adet town private and government-owned Early Childhood Care and Education centers. Its specific purpose was to assess how teachers implement the ECCE curriculum and explore problems that teachers faced in the ECCE curriculum implementation. To achieve this purpose, a qualitative exploratory research design was employed. In the present study, 13 teachers and 2 principals have participated by selecting through convenience sampling technique. Data were gathered through interview and observation. The collected data were analyzed using a thematic method of analysis. Two ECCE centers teachers and principals were selected using convenience sampling techniques. The result of the study shows that the common methods of teaching teachers implemented were dominantly explanation /teacher-centered approach/. In addition to this, teachers use mainly tests as assessment mechanism. Besides, the findings of the study also specify that teachers face many problems in the implementation of ECCE curriculum. More specifically, teaching-learning and assessing of children such as lack of resource (indoor and outdoor materials) and other classroom facilities (resource centers, reading corners, enough light, child-sized benches and chairs), lack of ongoing training of teachers, crowded classroom, small classroom and lack of administrative support stuck them from implementing of teaching and assessing of children. As a result, teachers in both centers did not implement the teaching and assessing of children which are needed and intended in ECCE centers due to problems mentioned. Therefore, West Gojam Zone Education office,Yilmana Densa Woreda Education office and non-governmental organizations must pay their attention to the private and government-owned ECCE centers