The invention discloses a construction method of a prefabricated wallboard and relates to the field of
assembly type buildings. The construction method comprises the following steps of S1, preparing raw materials, wherein the lower end face of the adopted prefabricated wallboard is provided with a plurality of groove openings, one end face of the prefabricated wallboard is provided with a plurality of
mortar holes communicating with the groove openings, and each groove opening communicates with two
mortar holes in the vertical direction; S2, conducting measuring and setting out; S3, pre-burying reinforcing steel bars; S4, conducting grouting partitioning; S5, hoisting the wallboard, wherein the groove openings on the lower end face of the prefabricated wallboard are aligned with the embedded straight reinforcing steel bars and then the straight reinforcing steel bars are inserted into the groove openings; S6, installing
diagonal braces; S7, conducting grouting sealing; and S8, conducting grouting filling, wherein
cement mortar is injected through the mortar holes, the mortar holes are plugged through plugs, and after being injected, the mortar is solidified to fix a base face and the wallboard. According to the construction method, the groove openings, the mortar holes and the embedded reinforcing steel bars are arranged, the
cement mortar is injected into the groove openings through the mortar holes, after the
cement mortar is solidified, the
cement mortar achieves connection between the base face and the prefabricated wallboard, so that the number of used reinforcing pieces is reduced, and the overall installation is firmer.