Positioning device convenient to adjust and used for surveying and mapping

The invention discloses a positioning device convenient to adjust and used for surveying and mapping. The positioning device comprises: a mounting shaft disc; multiple embedded anchors which are circumferentially arranged, wherein all the embedded anchors are vertically and relatively rotatably arranged at the circumferential edge position of the mounting shaft disc, and one end of each embedded anchor is rotatably inserted into a ground surface layer; a plurality of side connecting columns which are symmetrically and vertically arranged, wherein one end of each side connecting column is vertically fixed on the mounting shaft disc; a stable insertion assembly coaxially and relatively rotatably arranged in the mounting shaft disc, wherein one end of the stable insertion assembly is rotatably inserted into the ground surface layer; a positioning shaft rod erected above the mounting shaft disc; and a fine adjustment positioning assembly coaxially arranged above the mounting shaft disc and fixedly connected with