Objective: To observe the effect of Astragalus Injection (AD on levels of blood selenium (Se) and cytokines, and T cellular immune function with viral myocarditis (VM) in children. Methods: Eighty children with VM were randomly divided into 2 groups. The control group consisted of 38 patients, to whom conventional therapy, including energy mixture, vitamin C and coenzyme Q10, etc. were given. The treated group (n = 42), to whom combination therapy of conventional therapy and Al were given. The levels of blood Se and cytokine, including interleukin-1 (IL-1), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and also evaluation of T lymphocyte subsets and cardiac function were observed. Results: The results showed that after treatment, the levels of blood Se were significantly higher (P<0.01), while IL-1,IL-6 and TNF-a were significantly lower (P<0.01) than those before treatment in the control group. The left ventricular end diameter (LVED) were significantly decreased (P<0.01), left ventricular e Objective: To observe the effect of Astragalus Injection (AD on levels of blood selenium (Se) and cytokines, and T cellular immune function with viral myocarditis (VM) in children. Methods: Eighty children with VM were differentiated into 2 groups. control group consisted of 38 patients, to whom conventional therapy, including energy mixture, vitamin C and coenzyme Q10, etc. were given. The treated group (n = 42), to whom combination therapy of conventional therapy and al were given. of blood Se and cytokine, including interleukin-1 (IL-1), interleukin-6 (IL-6), tumor necrosis factor- alpha (TNF- alpha), and also evaluation of T lymphocyte subsets and cardiac function were observed. : The results showed that after treatment, the levels of blood Se were significantly higher (P <0.01), while IL-1, IL-6 and TNF-a were significantly lower (P <0.01) than those before treatment in the control group . The left ventricular end diameter (LVED) were significantly decreased (P <0.01), left ventricular e