The invention belongs to the technical field of power distribution network auxiliary tools and particularly relates to a portable bending tool for power grid outdoor operation. The portable bending tool comprises an installing base located on the bottom, an installing plate located above the installing base, a supporting ring located between the installing base and the installing plate, a slidingbase arranged on the outer side of the installing base, a locking pin used for detachably connecting the installing plate to the installing base, a locating cover, bolts, and an operation rod used fordriving the sliding base to rotate, wherein the locating cover and the bolts are used for connecting the supporting ring to the installing base. The portable bending tool for power grid outdoor operation has the characteristics of being simple in structure and convenient to operate, and saving time and labor, the overall structure of the portable bending tool is small and exquisite, the automaticbending device is convenient to carry, occupies little space, is particularly applicable to the outdoor field power distribution operation process and can be carried, and the operation efficiency ofoutdoor operators is improved.