Blood transfusion is a routine, life-saving medical intervention which is generally regarded as safe when done appropriately, but it is not absolutely free from adverse reaction. The aim of the study was to analyze the Adverse Transfusion Reaction (ATRs) as a part of Haemovigilance Programme of India at VIMSAR, Burla. This study was prospective and observational. All blood transfusions and adverse reaction which occurred due to transfusion at V S S Institute of Medical Science and Research (VIMSAR), Burla, between June 2018 and November 2018 were studied. The reactions were reported in a pre-designed transfusion reaction (TR) reporting form for blood and blood products as per the Haemovigilance software, PvPI. ATRs were also analyzed with respect to types of blood products. Total blood components issued by our blood bank to various departments and total ATRs during the study period were 13145 and 121 respectively. Majority of the reactions occurred with whole blood (0.71%), followed by packed red cells (0.17%). The most common ATR observed was allergy (80.16%) followed by febrile Non hemolytic TR (19.83%). Most of the ATRs were acute reactions. The study emphasizes the different reaction accompanied with blood transfusion, and how it can be minimised by proper laboratory technique so that quality and safety of transfusion therapy can be improvised.