为了实现液体环的轴对称径向扩展运动，提出了一种新的实验方法及设备。这种新的实验设备是由垂直的无膜激波管和液体环发生器所组成，可以用来观察轴对称液体环的形成、变形和破碎过程。轴对称液体环抛撒过程的实验研究已在这种实验设备上完成，并得到了相应的一系列流场照片。对实验结果的分析表明，液体表面的不稳定性是造成液体环破碎的主要原因。 In order to achieve axial symmetrical radial expansion of the liquid ring, a new experimental method and equipment are proposed. The new experimental setup, consisting of a vertical unwound shock tube and a liquid ring generator, can be used to observe the formation, deformation and fragmentation of an axisymmetric liquid ring. An experimental study of the axisymmetric liquid ring throwing process has been completed on this experimental equipment and a series of photographs of the flow field have been obtained. The analysis of the experimental results shows that the instability of the liquid surface is the main reason for the broken liquid ring.