Aim of the project is to create the temperature indicating cold storage box in order to enhance the perfect way to carry the blood bag which can withstand up to minimum of 8hours and maximum of 12hours. It consist of in built coolant and outer insulated container. The outer container is larger in size and the inner cold storage container is hallow and foldable and filled with granite powder and ice gel mixture and molded in a shape of blood bag. Then the blood storage bag is placed in the middle portion of the inner cold storage container. So that the blood bag can fit into the inner container tightly and the temperature is spread equally inside the container. The main objective of this project is to avoid the transfuse the blood to the patient if the blood temperature doesn't lies between 2 C to 4 C which can be identified with the help of temperature indicator which measure the temperature of the blood bag. The temperature range is designed between -10 C to +10 C. The bloodbag is maintained at a temperature between 2 C to 4 C.