本文针对架空输液管道系统，考虑介质和结构的相互作用，进行了动力特性和地震动响应研究．针对某些介质和结构参数，得出管内液体流动对系统固有频率及动力响应影响的若干初步结论。 In this paper, the dynamic characteristics and the earthquake response of overhead transmission pipelines system are studied considering the interaction of medium and structure. According to some media and structural parameters, some preliminary conclusions about the influence of the liquid flow in the tube on the natural frequency and the dynamic response of the system are obtained.