Mounting method of ultrahigh light partition board structure

The invention discloses an ultrahigh light partition board structure mounting method which comprises the following steps: S1, splicing structural wall columns to form a first layer of partition board, and clamping two ends of the first layer of partition board into second mortises in the structural wall columns respectively; a prefabricated waist beam is arranged at the bottom end of the first-layer partition wall board, and the bottom end of the first-layer partition wall board is clamped in a first mortise groove in the top side of the prefabricated waist beam; s2, the bottom end of the prefabricated waist beam is jacked through a jacking unit, so that the prefabricated waist beam and the first-layer partition wall board are lifted till the top end of the first-layer partition wall board is clamped into a clamping groove in the bottom side of the structural beam board; s3, a supporting jig frame is in lap joint between the prefabricated waist beam and the bottom supporting face, structural supporting of the