Panda blood refers to Rh-negative blood, which is also called panda blood because people with this blood type are as rare as pandas in China. o blood is very common and is not panda blood. o blood and Rh-negative blood belong to two different blood group systems. o blood belongs to the ABO blood group system, and the ABO blood group system also includes A blood, B blood and AB blood. rh-negative blood belongs to the Rh blood group Rh-negative blood belongs to the Rh blood group system, and the Rh blood group system also includes Rh-positive blood. The two blood group systems represent different ways of classifying human blood types.