The invention discloses a self-circulation water-saving high-pressure insulator washing device. The self-circulation water-saving high-pressure insulator washing device comprises an automatic spray-washing system and a pure water pressurizing system. The automatic spray-washing system comprises water storage cavities, a handle, water inlets, a water outlet and a fixing support column. The two semicircular cylindrical water storage cavities are in butt joint and form a washing cavity. The water outlet is formed in the bottom end of the washing cavity. The two water storage cavities are not communicated. The two water inlets are formed in the bottoms of the water storage cavities respectively. The water storage cavities are fixed to an insulator supporting column through the fixing support column. Six sets of spraying heads are arranged on the inner wall of each water storage cavity. The pure water pressurizing system comprises a pure water filtering device, a water collection pool and a water pump. The upper end of the pure water filtering device is connected with the water outlet, and the lower end of the pure water filtering device is communicated with the water collection pool. One end of the water pump is connected with the water collection pool, and the other end of the water pump is connected with the water inlets. According to the self-circulation water-saving high-pressure insulator washing device, closed type spray-washing is adopted; meanwhile, sewage is collected and recovered, the utilization rate of water resources is increased, and the purposes of saving water and achieving safety and high efficiency are achieved.