The utility model belongs to a device for controlling positioning of tunnel secondary lining reinforcing steel bars, which comprises a scale notch groove, one end face of a scale reinforcing steel barrod is provided with the scale notch groove playing a role in scale length marking, and the other end of the scale reinforcing steel bar rod is bent at a right angle to form a clamping hook rod; or one end face of the scale reinforcing steel bar rod is provided with a scale notch groove playing a role in scale length marking, the other end of the scale reinforcing steel bar rod is bent at a rightangle to form a clamping hook rod, and a clamping column is arranged on the scale reinforcing steel bar rod on the inner side parallel to the clamping hook rod at intervals. The utility model has theadvantages of simple structure, reasonable design, time saving, labor saving, high construction speed, good quality, low construction cost and good use effect, and can play a role in scale and positioning.