The invention provides a micro-miniature obstacle-surmounting electric power inspection robot, comprising a driving component and a hanging component (13) disposed above and below, wherein a distanceis spaced between the driving component and the hanging component (13), the lower end of the driving component is provided with a driving wheel (8) and an obstacle-surmounting wheel (9), and the position of the driving wheel (8) is offset from the position of the obstacle-surmounting wheel (9) along the traveling direction of the robot; the driving component and the hanging component (13) are connected by the connecting arm (12), and the connecting arm (12) is located on the same side of the driving wheel (8) and the obstacle-surmounting wheel (9) in the direction of the center line of the driving wheel (8). The robot does not need to rely on its own mechanical structure to surmount obstacles, but relies on an obstacle-surmounting bridge to surmount obstacles, which makes the robot body simple in structure, small in size, easy to install and maintain. When climbing the obstacle-surmounting bridge, the operation process is safe, stable and reliable, which makes a key breakthrough in thelightweight, productized and practical use of transmission line inspection robots.