Constructional engineering cost on-site convenient adjustment surveying and mapping device

The invention discloses a constructional engineering cost on-site convenient adjustment surveying and mapping device, and relates to the field of constructional engineering surveying and mapping. The device comprises a movable supporting seat, adjustable supporting frames are assembled on the two sides of the movable supporting seat, an assembled measuring supporting rod is movably connected to the movable supporting seat, a balancing weight and a surveying instrument are arranged at the bottom of the assembled measuring supporting rod, and the movable supporting seat comprises an upper disc and a lower disc. The upper disc and the lower disc are fixed through bolts, the top of the upper disc is fixedly connected with a hemispherical limiting cover, and the bottom of the lower disc is fixedly connected with a spherical limiting strip. When device is used, the supporting height of the surveying and mapping instrument can be adjusted, specifically, the supporting height can be adjusted through the adjustable su