Abstract： By using commercial software ADINA, the numerical simulation of the wind pressures and wind-induced dynamic responses of an umbrellashaped tension membrane structure were performed. Some key effects including wind-induced dynamical displacements, velocities, accelerations and equivalent stresses of the membrane structure were systematically investigated. Moreover, the effect of several important parameters on wind pressures and structural windinduced dynamic responses was summarized, such as structural rise-span ratio, incoming wind direction, membrane initial pretension and opening/closure forms in the membrane hat. Furthermore, the structural windinduced responses and wind pressure coefficients were obtained. The present results can provide reference for the wind resistant design of similar tension membrane structures.