There is nothing worse than leaving home country. Instability in many parts of the world has led to massive displacement of civilian population with associated shortage of basic services such as food, water, shelter and health services often leading to higher incidence of morbidity and mortality. Malnutrition and anaemia remain one of the most common causes of morbidity and mortality among displaced population throughout the world. The most vulnerable to suffer from the consequences of malnutrition and anaemia are refugee children due to their living condition. Although the burden of malnutrition and anaemia is expected to be high in protracted refugee areas, the magnitude of malnutrition and anaemia and their determinants among refugee children are not well identified and documented. The objective of this work is to assess the magnitude and determinants of under nutrition and anaemia among refugee preschool children in Kebribeyah refugee camp, Ethiopia.