The invention relates to a hot runner nozzle device of a giant magnetostrictive material driver, belonging to the field of precision injection molding dies. The hot runner nozzle device mainly comprises a main runner nozzle, a fixed die mounting plate, a runner plate, giant magnetostrictive drivers, a valve rod, a front nozzle plate, a rear nozzle plate, a nozzle insert, a nozzle heater and a nozzle, wherein the main runner nozzle is arranged in the middle of a die, the lower end of the main runner nozzle is provided with the runner plate, the giant magnetostrictive drivers are distributed around the main runner nozzle, and the valve rod driven by the giant magnetostrictive drivers moves up and down to open and close the nozzle and is movably matched with holes in the runner plate, the nozzle insert and the nozzle heater. In the hot runner nozzle device, the nozzle response frequency can reach as high as above 2000Hz and can satisfy the requirements of ultra-high-speed precision injection molding, and the giant magnetostrictive material driver with a coolant gallery is not interfered by temperature fluctuation and the like and has stable and reliable operation and convenient control.