Auxiliary mounting rack for total station prism

The utility model provides an auxiliary mounting rack for a total station prism, which comprises a horizontal adjusting seat arranged in a lifting way along the Z direction, an X-direction guide groove with a distance mark is arranged on the horizontal adjusting seat, an X-direction guide seat is arranged on the X-direction guide groove in a sliding connection way, a Y-direction guide groove with a distance mark is arranged on the X-direction guide seat, and the Y-direction guide groove is arranged on the Y-direction guide seat. The Y-direction guide groove is provided with a fixed seat in sliding connection, and the fixed seat is used for connecting a prism; when coordinate lofting is carried out on the prism through the installation frame, the surveying and mapping professional requirement for prism operators is almost zero, general construction site small workers can be competent, and all that is needed is to move the prism front, back, left and right according to the command of total station command perso