A binding machine comprising: a first body part (100, 100C) having a first housing and a handle including a grip (120L, 120R) that can be grasped by an operator, the first housing being provided with a battery mounting part configured to mount a battery, and the grip (120L, 120R) being provided with an operation switch; a second body part (200, 200C) having a second housing, a curl guide (230A, 230B) attached to the second housing, a twisting unit arranged in the second housing, and a control device, the curl guide having an opening in which a binding object can be inserted and being configured to curl a wire around the binding object inserted in the opening, and the twisting unit including a twisting motor, a deceleration mechanism for performing deceleration and torque amplification of the twisting motor, a twisting shaft connected to the deceleration mechanism and configured to rotate by rotation of the twisting motor for twisting the curled wire, a movable member configured to be displaced by a rotating operation of the twisting shaft, and a holding part projecting from a tip end-side of the movable member and being configured to hold and twist the wire; and an elongated connecting part connecting the first body part and the second body part, wherein the connecting part is an elongated hollow member and a wiring is laid in the inside thereof, and the wiring is configured to be connected to the battery and the operation switch of the first body part and the control device of the second body part so that communication of electric signals between the first body part and the second body part and power supply from the first body part to the second body part is performed through the wiring, wherein the curl guide includes first and second guide parts (231A, 232A) projecting in a first direction from a tip end of the second housing and arranged with a prescribed gap to define the opening in a second direction orthogonal to the first direction, wherein the first body part and the second body part are arranged such that a virtual axis line, which connects an intermediate position in the prescribed gap at a tip end of the second body part and an intermediate position in a lateral direction of the connecting part at a connection end of the connecting part with the first body part, is inclined relative to an axis line of the twisting shaft, and wherein the connecting part is arranged such that an axis line of the connecting part is inclined toward the operator with respect to the axis line of the twisting shaft, whereby an inclination angle of the axis line of the connecting part with respect to the axis line of the twisting shaft is equal to or smaller than 45 degrees. a first body part (100, 100C) having a first housing and a handle including a grip (120L, 120R) that can be grasped by an operator, the first housing being provided with a battery mounting part configured to mount a battery, and the grip (120L, 120R) being provided with an operation switch; a second body part (200, 200C) having a second housing, a curl guide (230A, 230B) attached to the second housing, a twisting unit arranged in the second housing, and a control device, the curl guide having an opening in which a binding object can be inserted and being configured to curl a wire around the binding object inserted in the opening, and the twisting unit including a twisting motor, a deceleration mechanism for performing deceleration and torque amplification of the twisting motor, a twisting shaft connected to the deceleration mechanism and configured to rotate by rotation of the twisting motor for twisting the curled wire, a movable member configured to be displaced by a rotating operation of the twisting shaft, and a holding part projecting from a tip end-side of the movable member and being configured to hold and twist the wire; and an elongated connecting part connecting the first body part and the second body part, wherein the connecting part is an elongated hollow member and a wiring is laid in the inside thereof, and the wiring is configured to be connected to the battery and the operation switch of the first body part and the control device of the second body part so that communication of electric signals between the first body part and the second body part and power supply from the first body part to the second body part is performed through the wiring, wherein the curl guide includes first and second guide parts (231A, 232A) projecting in a first direction from a tip end of the second housing and arranged with a prescribed gap to define the opening in a second direction orthogonal to the first direction, wherein the first body part and the second body part are arranged such that a virtual axis line, which connects an intermediate position in the prescribed gap at a tip end of the second body part and an intermediate position in a lateral direction of the connecting part at a connection end of the connecting part with the first body part, is inclined relative to an axis line of the twisting shaft, and wherein the connecting part is arranged such that an axis line of the connecting part is inclined toward the operator with respect to the axis line of the twisting shaft, whereby an inclination angle of the axis line of the connecting part with respect to the axis line of the twisting shaft is equal to or smaller than 45 degrees.