The utility model discloses a tool for swinging a dolly in an underlying switchgear in/out. The lower portion of the underlying switchgear is provided with an operational jack, the operational jack is internally provided with a first connecting piece whose cross section is rectangular, the tool comprises a ratchet wrench and an adapter, the ratchet wrench comprises a handle and a second connecting piece connected to one end of the handle, the cross section of the second connecting piece is rectangular, one end of the adapter comprises a cylindrical segment which is inserted into the operational jack, the cylindrical segment is internally provided with a first rectangular hole into which the first connecting piece is inserted in a matched manner, and the other end of the adapter is internally provided with a second rectangular hole into which the second connecting piece of the ratchet wrench is inserted in a matched manner. The tool has the advantages that the tool can be continuously operated via the ratchet wrench which is used as an operating handle, it is not required to pull out and adjust the ratchet wrench repeatedly when the dolly is swung in and out, the time for swinging the dolly in and out is shortened from 4-6 minutes to within 1 minute, and the working efficiency is improved.