Patients with anemia can take Colla Corii As Colla Corii is made from animal skin, especially donkey skin, which is rich in collagen and can replenish the protein needed for anemia, but according to the theory of Chinese medicine, anemia is divided into cold anemia and hot anemia. However, according to the theory of Chinese medicine, anemia is divided into cold anemia and hot anemia. Colla Corii Asini is a warm blood tonic, so it is suitable for patients with cold anemia. If the patient has hot anemia, taking Colla Corii Asini alone may cause fire, so it can be applied together with medicines to clear heat and nourish Yin and heat, such as Sheng Di, Dan Pi and Bai Shao, which can relieve the manifestation of Colla Corii Asini on fire. Patients with cold anemia can take Colla Corii Asini alone without the manifestation of fire. At the same time, Colla Corii Asini can also stop bleeding, so it is very suitable for patients with anemia and bleeding tendency, while for those patients with anemia and blood stasis, it is not suitable to take Colla Corii Asini instead.