A binding machine includes a body part, a feeding unit configured to feed a wire, a first guide and a second guide extending in a first direction from an end portion on one side of the body part, arranged with an interval, in which a binding object is inserted, in a second direction orthogonal to the first direction, and configured to guide the wire fed by the feeding unit, a twisting unit configured to twist the wire guided by the first guide and the second guide, and a guide moving part configured to change the interval from a first distance to a second distance shorter than the first distance.