A combined tree pruning tool for electric power circuit construction is characterized by comprising an insulating operation rod, a connecting rod, a fixed scraper knife, an effort-saving hook, an arc-shaped effort-saving saw and a lower hook dynamic knife, wherein the insulating operation rod is in threaded connection with the connecting rod, the connecting rod is connected with a bolt at the lower portion of the fixed scraper knife, two installing holes are formed in the lower portion and the upper portion of the left side of the fixed scraper knife respectively, the two installing holes formed in the upper portion are in bolt connection with two connecting holes formed in the tail portion of the arc-shaped effort-saving saw, and the two installing holes formed in the lower portion are in bolt connection with small holes formed in the tail portion of the lower hook dynamic knife. The combined tree pruning tool has the advantages that the combined tree pruning tool for electric power circuit construction is simple in structure, convenient to carry, low in cost, good in practicability, obvious in effect and suitable for tree pruning work on the lower side of a power transmission line, makes tree pruning quicker and more convenient and is very beneficial to popularization and application.