The invention discloses concrete beam type prefabricated assembling elevator foundation for construction. The concrete beam type prefabricated assembling elevator foundation for construction comprises a square-net-shaped framework structure formed by cross beams prefabricated by concrete and vertical beams fabricated by concrete in a crossed mode, a plurality of communicated prestress ducts are arranged inside the cross beams and the vertical beams, the cross beams and the vertical beams are connected in a fastening mode through prestress wires which pass through the ducts, and the prestress steel wires are fixed at the end portions of the cross beams or the vertical beams in an anchoring mode through anchorage devices. Components of the concrete beam type elevator foundation for prefabricated assembling construction are all produced and installed in a prefabricated assembling mode, after a construction elevator is dismantled, the foundation can be dismounted to be used in a repetitive mode, and therefore the purpose that time and investment can be saved, and environment can be protected is achieved.