TPE electric wire printing device and TPE electric wire

According to the TPE electric wire lettering device and the TPE electric wire, a first through hole, a second through hole, a third through hole and a fourth through hole which are vertical are sequentially formed in an adjusting back plate, a first wire guide roller is detachably fixed to one side of the adjusting back plate through the first through hole, and a second wire guide roller is detachably fixed to the other side of the adjusting back plate through the second through hole; the second wire guide roller is detachably fixed to one side of the adjusting back plate through the second through hole, the third wire guide roller is detachably fixed to one side of the adjusting back plate through the third through hole, and the fourth wire guide roller is detachably fixed to one side of the adjusting back plate through the fourth through hole. After the stranded wire tension stabilizing device is additionally arranged, the wires are prevented from shaking during lettering, and the reject ratio is reduced. T