Pig blood is salty and flat. According to the Compendium of Materia Medica, pig's blood has the function of "generating blood", which is suitable for the elderly, women and children who are growing and developing. Experiments have proved that pig's blood has a certain curative effect on aplastic anemia. At the same time, pig's blood has the function of cleaning the gastrointestinal tract, monthly consumption of 1 - 2 times, can reduce the occurrence of gastrointestinal diseases.