Auxiliary calibration device convenient for adjusting position of rapid screening type alcohol detector

The utility model relates to an auxiliary calibration device convenient for adjusting the position of a rapid screening type alcohol detector. The auxiliary calibration device comprises a device shell and a positioning assembly, a groove is formed in the top surface of the device shell, and scale marks parallel to the axial direction of the groove are arranged on the top surface of the device shell; the positioning assembly comprises an indicating piece, a first rotary knob, an internal driving set and a positioning piece, a sliding groove which is close to the scale line and parallel to the scale line is formed in the surface of the device shell, and the indicating piece is slidably connected into the sliding groove; the interior of the device shell is of a hollow structure, a through groove parallel to the axial direction of the groove is formed in the bottom face of the groove, the positioning piece is slidably connected into the through groove, the first rotary knob is rotatably connected to one side wall