The animal’s blood is flat and salty in nature, and is an ideal blood tonic. It contains high iron content, which is easily absorbed and utilized by the body, and contains a variety of trace elements and vitamin K. It is also better at removing dust and harmful metal particles from the human body that can damage the body. Women in the menstrual period itself is in a state of blood loss, so when the menstrual period appropriate to eat some duck blood, or very good for the health of the body, can play the role of blood. But when eating duck blood as far as possible do not eat with soybeans, and soybeans together easily cause indigestion, and duck blood is best not made spicy, a little lighter is relatively more appropriate. So in the menstrual period can eat duck blood, chicken blood and so on, on the one hand, can play the role of blood, on the other hand is also relatively help digestion, but also better remove the human body inside the dust and harmful metal particles on the human body damage, the human health to play a certain role in conditioning, so women in the menstrual period can consider eating duck blood.