The invention relates to an extra-high voltage enlarged cluster parachute injecting and repairing system. The injecting and repairing system comprises an injection machine used for injecting and repairing a cluster parachute on the outer surface of a composite insulator core rod, wherein the injection machine comprises a horizontally arranged lower template which is fixed and mounted through support feet; a lower die is horizontally arranged and mounted on the upper end face of the lower template; a horizontally arranged upper template is mounted right above the lower die; an upper die positioned right above the lower die is arranged at the lower end of the upper template; a hooking device is arranged at each of the two ends of the upper die in the axial direction of a composite insulator; an automatic transporting device is arranged at the front end of the injection machine. The injecting and repairing system has the following advantages: a transportation frame is driven by an air cylinder to realize transportation of the composite insulator, after injection and repair, the composite insulator is taken out from the lower die along with the movement of the upper die through the hooking device mounted on the upper die, and the composite insulator is transported out through the transportation frame; the system is higher in mechanization level, and manual transportation is not needed, so that the manual labor strength is reduced.