A wire straightening device , to be included in a wire processing device , for straightening a curl of a wire that is fed onto a straight feed path , the wire straightening device comprising: a plurality of first straightening rollers arranged along the feed path ; a plurality of second straightening rollers arranged along the feed path and arranged on an opposite side of the feed path from the first straightening rollers ; a first support member that supports the first straightening rollers ; a second support member that supports the second straightening rollers ; an actuator that moves the first support member in a direction such that the first straightening rollers move closer to the second straightening rollers and in a direction such that the first straightening rollers move away from the second straightening roller; a preset value obtaining device that obtains a preset value of roller spacing, representing spacing between the first straightening rollers and the second straightening rollers , which is predetermined for each type of wire ; a roller spacing automatic setting device that drives the actuator so that the roller spacing becomes equal to the preset value in accordance with the type of the wire , when the type of the wire is input; and a roller spacing changing device that changes the roller spacing based on an operation by an operator while retaining the preset value during operation of the wire processing device , characterized in that the roller spacing changing device includes a computer including a correction value setting section that sets a correction value of the roller spacing based on an operation by the operator, and a drive control section that drives the actuator so that the roller spacing becomes equal to a value that is obtained by adding the correction value to the preset value. a plurality of first straightening rollers arranged along the feed path ; a plurality of second straightening rollers arranged along the feed path and arranged on an opposite side of the feed path from the first straightening rollers ; a first support member that supports the first straightening rollers ; a second support member that supports the second straightening rollers ; an actuator that moves the first support member in a direction such that the first straightening rollers move closer to the second straightening rollers and in a direction such that the first straightening rollers move away from the second straightening roller; a preset value obtaining device that obtains a preset value of roller spacing, representing spacing between the first straightening rollers and the second straightening rollers , which is predetermined for each type of wire ; a roller spacing automatic setting device that drives the actuator so that the roller spacing becomes equal to the preset value in accordance with the type of the wire , when the type of the wire is input; and a roller spacing changing device that changes the roller spacing based on an operation by an operator while retaining the preset value during operation of the wire processing device , characterized in that the roller spacing changing device includes a computer including a correction value setting section that sets a correction value of the roller spacing based on an operation by the operator, and a drive control section that drives the actuator so that the roller spacing becomes equal to a value that is obtained by adding the correction value to the preset value. <EOS>