A concrete utility pole connected via high-strength flanges is characterized in that the concrete utility pole is connected via butt joint of high-strength flanges; in section-based manufacture of a concrete utility pole reinforcement frame for the concrete utility pole, steel ring plates are added, and a high-strength flange is welded to each steel ring plate; the steel ring plates and the high-strength flanges are made with carbon structural steel and low-alloy high-strength structural steel respectively, the concrete utility pole is steam-cured after concreting and centrifugal forming, is transported to a site after passing acceptance inspection and is connected section by section via bolts, and section-based connection of the concrete utility pole is achieved. The concrete utility pole connected via high-strength flanges has the advantages that the height and bearing requirements of the concrete utility pole are met, section-based assembly is performed as required, and the concrete utility pole is applicable to the section-based assembly in mountainous areas having transportation difficulties.