Method of assembling prefabricated wall panels: Step 1, prepare the adhesive components; Step 2, composite the adhesive components on the bottom of the prefabricated wall panel; Step 3, when the prefabricated wall panel is vertically positioned, the adhesive components are pressed against the floor; Step 4, temporarily secure the vertically positioned prefabricated wall panel at the joint between the top of the panel and the ceiling joist floor, by inserting wooden wedges; Step 5, after assembling the prefabricated wall panels into a partition wall, align and affix adhesive components on the top of each prefabricated wall panel; Step 6, inject grout adhesive separately into the bonding components and adhesive components; Step 7, inject PC joint filler into the joint between the top of the partition wall and the ceiling joist floor, and then apply cementitious mortar on both sides of the joint.