Background: Globally, acute diarrhoea claims around 1.5 million lives of under-five children. In India, ADD accounts for 8% of deaths in <5yrs age group. Child may be pushed into an irreversible outcome as stunting because of inadequate nutrition and repeated bouts of infection during the first 1000 days of life. Oral rehydration therapy is the most effective treatment intervention which can avert about 14% of deaths in under five children.Methods: A cross sectional study was done among 270 mothers of under five children from our urban health centre service area of PSGIMSR.Results: Among 270 mothers of under five children most of them belonged to the age group of ≤25 years. Only 10.7% of the mothers were aware that infection or germs cause diarrhea, signs of dehydration were not known by 80% of mothers. Mothers’ with more than one child and mothers with education more than 8th class were emerged as the factors affecting ORS preparation.Conclusions: The knowledge on diarrhoea was low. Although awareness regarding spread of diarrhoea and ORS was adequate in this community, knowledge regarding continuation of feeding and signs of dehydration were deficient. Thus educating the mothers of under-five children regarding correct practices of home management of diarrhoea is likely to further reduce diarrhoea morbidity and mortality.