Astragalus polysaccharide for injection is an active ingredient extracted, isolated and purified from Astragalus membranaceus, a traditional Chinese medicine. Clinical tests have shown that Astragalus polysaccharide has the effect of stimulating bone marrow hematopoiesis and enhancing immune function. In vitro tests have shown that Astragalus polysaccharide can stimulate the proliferation of spleen cells in mice and secrete a variety of cytokines in human peripheral blood mononuclear cells. It is commonly used clinically for the treatment of patients with symptoms such as lethargy, fatigue, little speech, excessive sweating, shortness of breath and loss of appetite, and also for tumor patients with reduced leukocytes, reduced quality of life and low immune function after chemotherapy. Astragalus polysaccharide injection is prone to allergy, skin test must be done before use, and only those with negative skin test can be used normally.