Haematological changes are very commonly associated with malaria and play a significant role in serious complications associated with the disease. The haematological abnormalities that have been reported to consistently accompany malaria include anaemia, thrombocytopenia, and atypical lymphocytosis and infrequently, disseminated intravascular coagulation. Hence, from the above literature findings the current study was planned to know the spectrum of clinical manifestations, infecting species, age distribution and mortality in admitted patients of malaria. Fifty patients found positive for malaria in Darbhanga Medical College and Hospital, Laheriasarai, Darbhanga were enrolled in the present study for duration of Nov 2011 to Oct 2012. The following were the inclusion and exclusion criteria for the present study. The patients visiting Out Patient Department (OPD) and in-patient department (IPD) in DMCH were considered in the study. All the patients were duly informed and valid consent was taken. The entire patient’s clinical history was collected. From the present study it can be concluded that malaria should be evaluated by haematological parameters. Patients of vivax malaria should be monitored for the development of different complications as their early detection and treatment could be lifesaving. The prompt recognition, prompt supervision, and reasonable reassuring therapy may reduce mortality due to falciparum cerebral malaria.