Voltage-sharing member and GIS lightning arrester

The invention discloses a voltage-sharing member and a GIS lightning arrestor, the voltage-sharing member comprises two voltage-sharing covers and a plurality of support columns, the two voltage-sharing covers are cylindrical members which are vertically arranged and are vertically distributed at intervals, the plurality of support columns are vertically arranged and are annularly distributed between the two voltage-sharing covers at intervals, and the support columns are arranged between the two voltage-sharing covers at intervals. The two ends of each supporting column are connected with the ends, close to each other, of the two voltage-sharing covers, the voltage-sharing covers and the supporting columns are metal pieces, and the multiple supporting columns distributed at intervals in the annular direction are arranged between the two voltage-sharing covers, so that a hollow structure is formed between the two voltage-sharing covers. Therefore, the noise is not amplified after entering the space between th