The invention belongs to the technical field of surveying devices, particularly relates to a geospatial surveying device for territorial space overall planning and a use method of the geospatial surveying device, and aims to solve the problems that an existing geospatial surveying device is inconvenient to carry and carry and tedious to operate, and a support needs to be installed in advance. The outer wall of the vertical rod is sleeved with a bearing plate, and a surveying instrument is placed above the bearing plate. The multifunctional structure is arranged at the top of the bearing plate and used for containing the surveying instrument and enabling surveying and mapping personnel to conveniently sit on the movable bottom plate to move, the surveying and mapping personnel can sit on the two folded protection boxes, the surveying and mapping device is convenient to carry, the surveying and mapping personnel can more comfortably move, the functions are complete, and the practicability is high. In addition, by pushing the bearing plate upwards, the two protection boxes can be directly opened, a surveying instrument can be conveniently used for surveying and mapping, operation is easy, and surveying and mapping efficiency is improved.