Poor immunity of the body can usually take the following types of drugs: First, from the perspective of Chinese medicine, poor immunity of the body is caused by the deficiency of the body, which is usually triggered by kidney deficiency, qi deficiency and blood deficiency. If the immunity is poor due to kidney deficiency, you can take Cordyceps sinensis for treatment. If the immunity is low due to Qi deficiency, you can apply drugs to supplement Qi, such as Salvia, Ginseng, American Ginseng or apply drugs such as Scutellaria, Radix Astragali and Radix Codonopsis. If the immunity is poor due to blood deficiency, it can be treated with drugs such as safflower and rhodiola. Secondly, from the perspective of western medicine, poor immunity can be treated with oral splenomycin, or intramuscular injection of peptide hormones such as thymopentin, and intravenous input of immunoglobulin and other drugs.