The utility model discloses a multi-functional insulator cleaning tool. The tool comprises a handle, a spraying head, a cleaning hair brush, a water pump and a remote controller, wherein the front end of the handle is connected with a hair brush basal body; the cleaning hair brush is fixedly arranged on the hair brush basal body; the spraying head is also fixedly arranged on the hair brush basal body and is connected with the water pump through a pipeline at the rear end; the rear end of the hair brush basal body is coupled to a cleaning motor; the cleaning motor is connected to a power box through a power line; the water pump is, on one hand, physically connected with the power box, and on the other hand, electrically connected with the power line; a remote control signal receiving device and a remote control signal receiving device are arranged in the power box respectively; the remote control signal receiving device is used for triggering a water pump switch; the remote control signal receiving device is used for triggering a cleaning motor switch. In cleaning work of an insulator of a high tower with voltage of 110 kV and above, an operator can wipe the insulator without leaning out; the tool can be used for wiping dead corners of a porcelain type insulator, the cleaning is more complete, and particularly, the working efficiency and the personal safety of the field operator are improved.