Objective: To observe the influence of first-decocted ephedra to the antibacterial and anti-A-type influenza virus effects of Maxing Shigan Decoction (MXSGD). Methods: (~) The agar diffusion test and tube method were respectively used for examination of the antibacterial effects of the decoction which ephedra decocted first (D-ephedra) and the decoction which those four kinds of herbs decocted at the same time (D-4) on S. aureus, S. epidermidis, E. coli, u-hemolytic streptococcus, ~-hemolytic streptococcus. The antibacterial effects i...