Method FM1 virus was dropped nasally in Kunming mice, then intraperitoneally injected extraction of Radix isatidis to them, the antiviral effects of Radix isatidis were observed.

• 方法昆明种小鼠滴鼻感染流感病毒FM1后腹腔注射板蓝根提取液,观察板蓝根提取液的抗病毒作用。