A lead wire straightening device comprising: a holding section configured to hold a lead component; a straightening unit configured to straighten a lead wire that the lead component includes; a driving section (90, 139) configured to rotate at least one of the holding section and the straightening unit around a rotation axis (121, 124) extending in a first direction, the holding section and the straightening unit facing each other along the direction of which when straightening the lead wire; and a control device, wherein the straightening unit further comprises: a first claw section; a second claw section disposed in a position facing the first claw section in a second direction intersecting the first direction; and an opening/closing driving section configured to move the first claw section towards or away from the second claw section, and wherein the control device is configured to perform: If a process of disposing the lead wire of the lead component held by the holding section between the first claw section and the second claw section; and a process of straightening the lead wire by controlling the opening/closing driving section of the straightening unit such that the first claw section and the second claw section clamp the lead wire there between, characterized in that the control device is further configured to perform: a process of changing positions of the first claw section and the second claw section relatively to the lead wire by controlling the driving section (90, 139), after the lead wire is clamped and after opening the first and second claw sections (131,132), such that at least one of the holding section and the straightening unit rotate; and a process of clamping again the lead wire with the first claw section and the second claw section to thereby straighten the lead wire after the positions of the first claw section and the second claw section are changed. a holding section configured to hold a lead component; a straightening unit configured to straighten a lead wire that the lead component includes; a driving section (90, 139) configured to rotate at least one of the holding section and the straightening unit around a rotation axis (121, 124) extending in a first direction, the holding section and the straightening unit facing each other along the direction of which when straightening the lead wire; and a control device, wherein the straightening unit further comprises: a first claw section; a second claw section disposed in a position facing the first claw section in a second direction intersecting the first direction; and an opening/closing driving section configured to move the first claw section towards or away from the second claw section, and wherein the control device is configured to perform: If a process of disposing the lead wire of the lead component held by the holding section between the first claw section and the second claw section; and a process of straightening the lead wire by controlling the opening/closing driving section of the straightening unit such that the first claw section and the second claw section clamp the lead wire there between, characterized in that the control device is further configured to perform: a process of changing positions of the first claw section and the second claw section relatively to the lead wire by controlling the driving section (90, 139), after the lead wire is clamped and after opening the first and second claw sections (131,132), such that at least one of the holding section and the straightening unit rotate; and a process of clamping again the lead wire with the first claw section and the second claw section to thereby straighten the lead wire after the positions of the first claw section and the second claw section are changed. a first claw section; a second claw section disposed in a position facing the first claw section in a second direction intersecting the first direction; and an opening/closing driving section configured to move the first claw section towards or away from the second claw section, and wherein the control device is configured to perform: If a process of disposing the lead wire of the lead component held by the holding section between the first claw section and the second claw section; and a process of straightening the lead wire by controlling the opening/closing driving section of the straightening unit such that the first claw section and the second claw section clamp the lead wire there between, characterized in that the control device is further configured to perform: a process of changing positions of the first claw section and the second claw section relatively to the lead wire by controlling the driving section (90, 139), after the lead wire is clamped and after opening the first and second claw sections (131,132), such that at least one of the holding section and the straightening unit rotate; and a process of clamping again the lead wire with the first claw section and the second claw section to thereby straighten the lead wire after the positions of the first claw section and the second claw section are changed. a process of changing positions of the first claw section and the second claw section relatively to the lead wire by controlling the driving section (90, 139), after the lead wire is clamped and after opening the first and second claw sections (131,132), such that at least one of the holding section and the straightening unit rotate; and a process of clamping again the lead wire with the first claw section and the second claw section to thereby straighten the lead wire after the positions of the first claw section and the second claw section are changed.