Objective To explore anti-EV71 effects of Ganlu Xiaodudan in vitro. Methods Ribavirin was taken as control drug, with the help of cell culture to observe anti-EV71 inhibition rate of Ganlu Xiaodudan in inhibiting-virus-directly experiment, therapeutic-inhibiting-virus experiment, preventive-inhibiting-virus experiment and preventive-therapeutic-inhibiting-virus experiment. Results In inhibiting-virus-directly experiment, therapeutic-inhibiting-virus experiment and preventive-therapeutic-inhibiting-virus experiment, virus inhibition rate of Ganlu Xiaodudan was higher than ribavirin. In preventi...