The utility model discloses an insulator vehicle-mounted transportation device. The device comprises a support, a movable clamping piece detachably connected with the support, and a fixing device usedfor fixedly installing the support on a transportation vehicle. Wherein a first groove is formed in the support; the movable clamping piece is provided with a second groove, and the first groove andthe second groove form a slotted hole structure used for positioning the insulator and/or the insulator sleeve. During use, an insulator or an insulator sleeve with the insulator is mounted in a slotted hole structure formed between the support and the movable clamping piece; and the support is fixedly connected with the movable clamping piece and is fixed on a transport vehicle through a fixing device. Therefore, in the transportation process, even in areas where roads are rugged and difficult to walk, the insulators cannot be damaged even if vehicles bump. Obviously, the insulator vehicle-mounted transportation device provided by the utility model can effectively enhance the safety and convenience of insulator transportation, is beneficial to ensuring that an overhaul task is completed on time, and ensures the safety of line operation.