Rotavirus diarrhoea is an important contributing factor for malnutrition, which in turn predisposes the child to further diarrhoea, thereby initiating a vicious cycle. This in turn results in periodic evaluation of bacteriologic and virological patterns of diarrhoea and therapeutic trials. Hence based on this above findings the current study was planned with the objective to know the proportion of rotavirus diarrhoea in children presenting with acute diarrhoea. The study was planned in the Upgraded Department of Paediatrics, Patna Medical College & Hospital, Patna From march 2015 to feb 2016. The 50 children’s aged 1 month to 4 years suffering from acute watery diarrhoea were included in the present study. Diarrhoea was defined as passage of three or more loose stools in the last 24 hours. Out of 50 children’s 25 children were divided in Group A as Rotavirus Positive cases and 25 were divided in the Group B as Rotavirus Negative cases. The study showed higher incidence of rota viral diarrhoea among children presenting with acute diarrhoea. Hence from the above data and literature data India continues to suffer from a disproportionately high morbidity and mortality from this preventable condition. Prioritizing diarrhoeal disease control interventions in the child health programme is urgently needed. Despite high prevalence, rotavirus diarrhoea can successfully and confidently be managed at home and in the oral rehydration corner of small hospitals.