It is widely understood that poverty and armed conflict are interrelated; with poverty making countries more prone to armed conflict, and conflict weakening economic growth and development. This study used micro-survey data to study how the children are poor multidimensionally following the armed conflicts in northern Ethiopia. Specifically, using the propensity score matching method, this study investigates the impact of armed conflict on each dimension of multidimensional poverty of children in Kobo town, North Wollo zone of Amhara Regional State of Ethiopia. The result shows that, the multidimensional child poverty index (MPI) in the conflict-affected area was 55.2%, with 94.1% incidence and 58.7% intensity of multidimensional poverty. In the non-affected area, child MPI was estimated to be 24%, with a 54% incidence and 44.5% intensity. The education dimension is the most important contributor to child poverty of conflict-affected area. The results of the logistic regression also revealed that family size and number of dependents have significant and positive triggers of child multidimensional poverty. The result indicated that the armed conflict has a positive and significant impact on multidimensional poverty of children in the study area, with substantial impact on the child security dimensions followed by education and living standard dimensions. The average treatment effect on the treated measured by nearest neighbor matching shows that children who were found in conflict zone are 32.6% more deprived as compared to those who were not affected by the conflict directly. The findings of our study suggested that the post-conflict intervention should give priority to the child security dimensions followed by education and living standard dimensions of poverty.