The invention discloses an insulator easy to clean dust. The insulator comprises a sleeve. A number of umbrella sleeves are mounted on the sleeve. An umbrella cap is arranged on each umbrella sleeve.A support rod is arranged on the sleeve. A connecting rod is arranged at the top of the support rod. A solar panel is arranged on the connecting rod. An accommodation cavity is arranged in each umbrella sleeve. An electric control box is arranged in each accommodation cavity. A cavity is arranged in each electric control box. A storage battery is arranged in each cavity. A shock-absorbing spring is arranged on each storage battery. A circuit mainboard is arranged on the top of each shock-absorbing spring. A single-chip computer is arranged on each circuit mainboard. A groove is arranged on theinner wall of the top of each electric control box. A first permanent magnet is embedded in each groove. A second permanent magnet is arranged on the bottom of each first permanent magnet. Each second permanent magnet is arranged on a desiccant box which is provided with a number of through holes. The insulator is easy to clean dust.