Since 1881, the American Red Cross has been committed to the humanitarian aid work. The Red Cross more than 95% of the staff is composed of by the volunteers, and every year, more than one hundred volunteers join them.the American Red Cross is the largest one of the relief organization, but it is the global victims rescue and emergency to guard against a branch of the system. In this paper, we will understand the functions of the American Red Cross and how it is providing various kinds of service. We will also discuss the American Red Cross, international committee of the Red Cross and red crescent history.The main function of the American Red Cross is divided into four areas: blood collection, disaster relief and rescue soldiers in the war and community education and publicity, victims.blood collection  many people mainly through the Red Cross blood collection know this organization. The Red Cross from about 4 million collect blood donors, for health accounts for about half of American blood supply. The American Red Cross in 2001 were collected more than 700 units of blood. The United States spends about 39000 units of blood need, used for accidents, surgery and disease treatment. The blood supply of all the hospital and the U.S. army use.The Red Cross the acquisition of the blood, will be carefully labeled, and to the two different places: testing laboratory and composition laboratory. Laboratory tests on blood for nine assay, the purpose is to ensure the safety of blood, not contagious disease. Discount sunglasses Components will be separated into a laboratory blood red blood cells, platelets and plasma. To test results come out later, can according to need to various hospitals will these components.disaster relief disaster relief, the Red Cross is another major work. Although properly handle the disaster is local, state and federal government's main responsibility, but once the sudden disaster, the demand of people is easy to more than government disposal ability. The Red Cross will strive for after receiving the notice two hours to any disaster or emergency response, but insist on do this also difficult, because some of the situation is very dangerous.