The invention provides a two-arm swing obstacle-clearing type line walking robot body, relating to a technique of robots. The invention is designed based on the scheme that an arm is fixed in cables and the other arm rotates around a fixed arm along with a body with counterweight movement in the main obstacle-clearing procedure. The two-arm swing obstacle-clearing type line walking robot body is characterized by comprising a body, a balance movable body and two working arms, wherein the body is composed of a stand and two sets of arm span adjusting components; the balance movable body consists of a counterweight component and a control box with a storage battery; the two working arms are respectively composed of the same rotating component, swinging component, traveling component and clamping component; the working arms are respectively mounted on two movable bodies of the body, wherein five degrees of freedom included in the movable bodies and one degree of freedom included in the balance movably body can provide all functions for check and obstacle clearance. The invention is suitable for the polling operation of high-voltage transmission line multi-line stage, and can prevent obstacles of shockproof hammers, suspension clamps, strain clamps, insulator chains, towers, and the like.