The invention relates to a ZnO arrester which is particularly suitable for multi-circuit lines on a same pole of an urban power network. With the rapid development of an urban power grid, the distribution lines are normally erected in multiple circuits on the same pole, and upper and lower loop lines are arranged at small distances, so that a disconnector is easy to touch or approach the lower line if a disconnector drops and swings with wind, and the normal operation of a system can be influenced probably; and whether a ZnO arrester works normally is difficult to distinguish if the ZnO arrester without the disconnector is arranged, and similarly the normal operation of the system is influenced. Therefore, the invention discloses the ZnO arrester. The ZnO arrester comprises a main arrester body, a disconnector, and flexible conductors. The ZnO arrester is characterized in that the disconnector is connected with the lower end of the main arrester body through an insulation flexible wire. After the disconnector drops, the disconnector is still connected with the lower end of the main arrester body through the insulation flexible wire, so that the disconnector can swing with the wind within a small amplitude so as not to touch or approach the lower line.