The invention discloses a concrete vertical alternative bay construction method. The method includes the steps that horizontal alternative bay seams of a to-be-constructed structure are divided out in the horizontal direction, and multiple vertical alternative bay seams of the to-be-constructed structure are divided out in the vertical direction; a first section of vertical structure is constructed to the horizontal alternative bay seams and the first vertical alternative bay seams; a first layer of horizontal structure is horizontally constructed on the first section of vertical structure and at the horizontal alternative bay seams in an alternative bay mode; meanwhile, a second section of vertical structure is vertically constructed to the second vertical alternative bay seams and the horizontal alternative bay seams on the first section of vertical structure and at the horizontal alternative bay seams in an alternative bay mode; a second layer of horizontal structure is horizontally constructed on the second section of vertical structure in an alternative bay mode and at the horizontal alternative bay seams; the next section of vertical structure is vertically constructed on the second section of vertical structure to the next vertical alternative bay seam and the horizontal alternative bay seam in an alternative bay mode and at the second vertical alternative bay seams; construction is repeated till construction of the last section of horizontal vertical structure and the last layer of horizontal structure is completed. Construction time is greatly saved.