The utility model relates to the technical field of municipal road design, and discloses a perpendicularity detection device for municipal road design, which comprises a base and a calibration
assembly, and is characterized in that the calibration
assembly comprises a stand column arranged in a mounting frame, an extension rod is arranged at one end of the stand column, a
lantern ring is arranged outside the extension rod, a connecting shaft is arranged on the outer wall of the
lantern ring, and lock holes are formed in two sides outside the connecting shaft; a connecting frame is arranged outside the
lantern ring, a sucker is arranged at one end of the connecting frame, a hole groove is formed in a positioning hole in the inner wall of the connecting frame, and a trigger button, a spring and a protruding block are arranged on the inner wall of the hole groove. A sliding groove is formed in the base, cavities are formed in the two sides of the inner wall of the sliding groove, electromagnets and sliding blocks are arranged in the cavities, and racks are arranged on one sides of the sliding blocks. According to the utility model, the vertical column of the detection equipment can be pulled to a
vertical angle through upward pulling force, the influence of uneven ground in a detection area on detection is avoided, rapid operation is facilitated, the operation efficiency is improved, and the accuracy of a detection result is ensured.