The invention discloses a construction method of a connection plate mounting connector of a single-layer partition board. The construction method comprises the steps that A, a partition wall board A is hoisted in place, the upper end of the partition wall board A is fixed temporarily through construction measures, and the lower end of the partition wall board A is arranged on a mounting joint; B,a connector is mounted at the upper end of the partition wall board A, a web of the connector is arranged on the top end face of the partition wall board A, then the position of the partition wall board A is adjusted, the mounting joint at the lower end of the partition wall board A is fixed after the position of the partition wall board A is fixed, a lower flange plate of the connector is furtherrotated to be attached to the partition wall board, then a fastening screw A is adopted to penetrate through a fastening hole A to fix the lower flange plate, and the mounting of the partition wall board A is completed; C, a partition wall board B is hoisted in place, after the position is adjusted to be precise, an upper flange plate is rotated to be attached to the wall partition board B closely, then a fastening screw B is adopted to penetrate through a fastening hole B to fix the upper flange plate, then the upper end of the partition wall board B is fixed and provided with a connector, and the mounting of the partition wall board B is completed; and D, the temporary fixing measures at the upper end of the partition wall board A are dismounted, and mounting is completed.