CONSTRUCTION PRODUCTION SYSTEM

PROBLEM TO BE SOLVED: To provide a construction production system for reducing time and labor for marking, and for preventing the occurrence of an artificial mistake.SOLUTION: The construction production system includes: a CPU which functions as existing portion investigation means for converting the electronic data of the existing portion of a building into three-dimensional CAD data, and for storing the three-dimensional CAD data as well as point group data acquired by a three-dimensional laser scanner or various job site investigation data such as a three-dimensional polygon model created from the point group data, construction member design means for arranging a member object to be newly constructed with respect to the three-dimensional polygon model, and member construction position output means for searching and outputting the member object obtained by reading an electronic tag attached to a member precut by a member factory 30 by an ID reader as well as the construction position information from the three-dimensional CAD model; and an automatic position pointing device 40 for pointing the construction position of the member in the existing portion on the basis of the construction position information of the member object output by the member construction position output means.