The total number of deaths among children under the age of five worldwide has dropped from 12.6 million in 1990 to 5.2 million in 2019. The world as a whole has accelerated in lowering under five mortalities, differences in under five mortality exist across regions and countries. Nigeria and India both solitary records for nearly a third of all deaths. The main objectives of this study is to assess the knowledge of mother’s regarding the management of selected common illness among children and to find out the association between knowledge score of mother’s regarding the management of selected common illness among children with demographic variables like age, education level, religion, area of residence, monthly income, occupation and number of children. The research approach adopted for the study is a quantitative approach. The independent variables were demographic variables and thus the dependent variables were knowledge of mother’s regarding the management of common illness. The extraneous variables were news, programs and information booklet. Sampling technique utilized in this study is convenient sampling technique. The findings of the study revealed that 46.7% of the participant had moderate knowledge regarding home management of common illness among children and 53.3% of the participants had good knowledge regarding home management of common illness among children. The findings of the study concluded that 46.7% of the mothers had moderate knowledge regarding home management of common illness among children and 53.3% of the mothers had good knowledge regarding home management of common childhood illness among children. The knowledge score mean percentage is 68.