Rh blood group positive is a normal blood group. Both Rh-positive and Rh-negative blood types are normal blood types. The difference between the two is reflected in the antigens on the surface of the red blood cells. 1. Rh-positive: The presence of D blood group substances (antigens) on the surface of the red blood cells results in an Rh-positive blood group. 2. Rh-negative: There are no antigens on the surface of the red blood cells, and the population of this blood type is relatively rare. According to the principle of mutual transfusion of blood of the same type, ABO blood type and Rh blood type need to be matched at the same time in order to be transfused with each other. Rh-positive and Rh-negative blood types cannot be infused with each other, and Rh-negative, if receiving Rh-positive blood, may undergo a serious hemolytic reaction with serious consequences. To find out what blood type you have, you can go to the hospital for a blood typing test.