An intelligent urban street bird nest demolishing device is used for demolishing bird nests on telegraph poles to ensure power transmission security. The intelligent urban street bird nest demolishing device is characterized in that a slide table is mounted on a vehicle body slidably, a translation mechanism is arranged between the slide table and the vehicle body, a scissor-fork lifter is arranged at the top of the slide table, a lifting adjustment mechanism is arranged at the top of the scissor-fork lifter, a movable plate moving up and down is arranged on the lifting adjustment mechanism, a large arm is mounted on the movable plate in a hinge manner, a large arm swing cylinder for driving the large arm to swing is arranged on the movable plate, a small arm is hinged to the large arm, a small arm swing motor for driving the small arm to swing is arranged on the large arm, a front arm is hinged to the small arm, a front arm swing motor for driving the front arm to swing is arranged on the small arm, and a clamping assembly is arranged at one end of the front arm and is used for clamping the bird nests to achieve demolishment. The intelligent urban street bird nest demolishing device is capable of demolishing the bird nests efficiently to ensure power transmission security.