Lifting type reaming device, drilling and reaming tool and drilling and reaming method

The invention relates to a drilling technology, and discloses a lifting type reaming device, a drilling and reaming tool and a drilling and reaming method. The lifting type reaming device comprises a main body (1), a reaming unit (2) used for reaming and an execution unit (3) used for controlling the reaming unit to act; the main body comprises a first end used for being connected with a drill bit, a second end used for being connected with a drill column and a containing cavity; the execution unit comprises a cone contained in the containing cavity (11) and used for expanding the reaming unit; the reaming unit comprises a reaming blade with the cutting direction from the drill bit to the drill column; and the first end of the reaming blade is fixed to the body, and the second end of the reaming blade is contained in the containing cavity in the drilling state and stretches out of the containing cavity in the reaming state. Reaming is carried out in the manner of lifting in the direction from the drill bit to