The invention discloses a demolishing construction method for a hanging basket of a single cable plane cable-stayed bridge. The demolishing construction method for the hanging basket of the single cable plane cable-stayed bridge comprises the following steps of (1) refitting the hanging basket; (2) moving the refitted hanging basket back to a planning position; and (3) demolishing the hanging basket. According to the technical schemes, on the basis of not changing the fact that an existing prestressed concrete continuous girder bridge mainly adopts hanging basket cantilever construction and under the condition of guaranteeing the water quality of the south-to-north water diversion project, a hanging basket truss, a suspension system and a walking system are refitted, so that the hanging basket is returned to the south-to-north water diversion river for demolishing; during single cable plane cable-stayed bridge construction on a across south-to-north water diversion truck canal by utilizing the demolishing construction method for the hanging basket of the single cable plane cable-stayed bridge, the hanging basket can be moved out of the truck canal for demolishing safely, rapidly and effectively, no sundries and impurities are fallen into the south-to-north water diversion river during the construction process, and the south-to-north water diversion water quality is not affected, and related state requirements for construction of a south-to-north water diversion bridge is met.