Agriculture is the main contributor of Ethiopian economic growth and holds the majority work forces.rnBut the agriculture practices is dependent with rainfall and small scale subsistence production system.rnBecause of this backward agricultural production practice, the country hits by frequent drought andrnmany people have been being food insecure. Farming irrigation is one key solution to minimize thosernkinds of vulnerability and improve food security. The research objective is to analyze the impact of smallrnscale irrigation on household food security in Mehal Sayint Worda, south Wollo zone, Amhara regionrnestablished on 204 ( 105 irrigation non-user and 99 irrigation users) sample. Both primary andrnsecondary data used for the study .Descriptive statistics analyze and propensity sore matching used torndeterminants impacts of small-scale irrigation on household food security and household foodrnconsumption. In the study descriptive analyze and econometric analyse found irrigation have positivernimpacts to ensure food securities. The studies found from irrigation user households 80.8 % ensure foodrnsecurity. The average treatment effect of the propensity matching results dig out, 51.1% irrigation userrnhouseholds ensure more food security than irrigation non-user household. From irrigation non-user onlyrn28.6 % ensures food security. In the same ways the study finding indicates the main challenge ofrnirrigation in the study area is the cost of technology. The study concluded that irrigation is one keyrnvaluable potential solution to ensure food security in the study area. Therefore, it is recommended thatrngovernment and all other participant should give focus on irrigation to minimize large number of thernstudy area food insecure households