Placenta Polypeptide Injection is a kind of peptide extracted from the placenta, which is mainly used in the treatment of cellular immune deficiency, viral infection, and leukopenia caused by various reasons. Because there are various cytokines in Placenta Polypeptide Injection, it can effectively improve the cellular immune function of human body. When the human body has low cellular immune function, Placenta Polypeptide Injection can be used. When the human body has a viral infection, which often leads to a decrease in the number of white blood cells, the body’s immune function will also be significantly reduced, can also be treated with placenta polypeptide injection. In addition, clinically common patients with leukopenia, if the number of white blood cells is significantly reduced, the body’s cellular immune function will also decline, can also use placenta polypeptide injection to increase the number of white blood cells in the peripheral blood, thereby improving the body’s cellular immune function.