The invention relates to an ejector with an arc vertical line, which is used for solving the problem the vertical line directly manually thrown and hung is adopted in the running of the traditional high-voltage power transmission line to cause high hazard, poor precision and high difficulty in the throwing and ejecting processes. The ejector with a vertical line comprises a guide steel pipe which is internally or externally provided with an elasticity storage mechanism and an elasticity ejecting mechanism matched with the elasticity storage mechanism; an ejecting head in the elasticity storage mechanism is in sliding fit with the guide steel pipe; the ejector with a vertical line, which is matched with the ejecting head, has the degree of freedom for sliding along the guide steel pipe and is arranged in the guide steel pipe to form collision combination with the ejecting head. The ejector is manufactured by adopting a mechanical elasticity theory and has simple structure and high practicability.