Suspension insulator

The utility model discloses a suspension insulator, and relates to the field of electric power equipment. The suspension insulator comprises a suspension insulator porcelain member (1), a steel cap (2), a steel pin (3) and an isolation rubber mat (4). The steel cap (2) is installed above the suspension insulator porcelain member (1) via the steel pin (3). The isolation rubber mat (4) is arranged between the suspension insulator porcelain member (1) and the steel cap (2) and is penetrated by the steel pin (3). The isolation rubber mat is additionally arranged between the suspension insulator porcelain member and the steel cap so that a gap does not need to be guaranteed in production, damage to the suspension insulator caused by thermal expansion and cold contraction is ensured to be avoided, labor and time are saved in production, physical labor is mitigated and work efficiency is enhanced. Meanwhile, radio interference resistance of the suspension insulator can be enhanced by the rubber mat.