To provide a binding machine which can reduce a force when the force to make a brake body part move is added to the brake body part in a direction that a connection part of the brake body part goes away from a connected part of a wire reel by a phenomenon that the connection part of the brake body part comes in contact with the connected part of the rotating wire reel.SOLUTION: A movable iron core 63A driven by a solenoid comprises an opening 63Ha having a diameter that a connection part 67 that is a spring pin can press-fit. A converting part 66A connected to a brake body part comprises an opening 66Ha in one end portion. The opening 66Ha penetrates the converting part 66A having a diameter larger than a diameter of the connection part 67 in the thickness direction. A brake part 61A comprises a cushioning...